Plot hole: Seeing The Child in episode 2-1 minute 10, Amy Sedaris' character shouts "Thank the Force." Up to that point nobody seemed to have the faintest idea of what sort of mysterious energy Grogu was using. It gets worse in episode 2-3 when Mando uses as greeting for the New Republic "May the Force be with you", which is used later other times. With the concept of Force being this ingrained in people's culture, it's inconceivable that *everyone* is completely clueless about Jedi, especially considering that Order 66 with the Jedi purge happens barely 30 years before the events of the Mandalorian, and several characters such as Kuiil or Greef Karga were alive and active during the time when Jedis were powerful and part of the administration.
Suggested correction: There's a difference between seeing the Force used and knowing what it is and the common phrase "thank the Force" or "may the Force be with you." Plus, the Child is not a Jedi.
Not technically a Jedi, but he has been trained by Jedi and does those magical Force things that people would associate with Jedi, and would be perceived as such, if only people had any memories about them. Mando and Greef do not have the faintest idea of such 'magic' having ever existed, and Kuil has heard 'rumors' of it. Less than 30 years. Really, it's a common problem for all the Star Wars saga to some extent and it has been already debated to death. In this series nobody even seems to know the concept of Force in season 1, then in season 2 it pops up with random mentions.
The sayings are just customary more than knowledge of the Force. The Galaxy is big, with 3B habitable worlds, each having up to hundreds of millions if not billions of inhabitants each. The Jedi, at their peak and fall, were around 10,000. Many never heard of the Jedi, even less seen one. Find a remote village somewhere, and ask them if they remember the Atari.
Chapter 9: The Marshal - S2-E1
Plot hole: The Tusken raiders offer a Bantha to the dragon to make it sleep longer. To do, so they wake it up, which seems to defeat the point, but let's assume they know what they are doing and the dragon catches up on sleep later. Regardless, the dragon already ate one the day before. If it does not stay put even after just eating a Bantha a day before, it's hard to imagine how feeding it can be productive, considering that they all live in a desert and have just a literal handful of large mammals. The dragon should have eaten them all in a week, at that rate.
Plot hole: Mando's ship was completely wrecked, but two mechanics fixed it to top performance level and aesthetic pleasantness in a time shorter than it took for the Child to eat a small packet of macaroons.
Suggested correction: His ship was badly damaged, but mostly repaired by the Mon Calamari. The remaining repair work was less complex, but still took place over the course of several days. A space-faring civilisation being able to repair a damaged ship is not a plot hole.
His ship is literally falling apart (we see pieces falling off as it moves), the engines are barely functioning and looks like hell. It's not at all a mistake that a "space-faring civilization" is "able to repair a damaged ship", it is when the editing of an episode makes it look like two dudes fixed to pristine condition a wreckage in the same time it takes for a kid to munch his cookies.
Chapter 14: The Tragedy - S2-E6
Plot hole: Mando needs to make it to the top of the hill fast (he lost the ever important high ground, but he does not seem to mind). He would have a jetpack, but he left it behind. Now, everyone can be distracted and forget some piece of equipment and realise only a minute later (although it's a huge walk, and he has to climb, you'd think he'd remember right away). The problem is, even if Mando forgot the pack and realised only a minute later, the throwaway comedy intro of episode 2.2 showed that he can remote control the jetpack and call it back to himself.
Chapter 15: The Believer - S2-E7
Plot hole: The Imperial terminals have facial scan recognition...or just facial scan, really, since ANYONE regardless of being part of the army or not can just access any information of any level, as long as they have ANY face that the app can scan and identify as not being a known criminal.
Suggested correction: The facial scan prevents droids from stealing data from terminals.
And also criminals from doing that. It runs a check, as I said in the entry. Against "Any New Republic registry", even, which should disqualify also Mayfeld being a convicted felon, but that's another issue. Who designs a security system that does complex checks about who is a wanted criminal or part of 'the other side' but does not check if you are part of their side? Also, any low level trooper (or nobody, even the janitor) can just access any information of any level, including the location of their special forces cruiser.
Maybe it just checks if you're human. You never see non-humans as part of the empire. A lot of non-humans are as "subspecies" by the empire.
Chapter 16: The Rescue - S2-E8
Plot hole: In the previous episode, Mando and the others got a hold of the coordinates of Moff Gideon's cruiser, but this episode begins with them capturing Dr. Pershing in a shuttle, and after that they locate Bo-Katan and Koska and get them on board for the mission. How they found these people is unknown, and cruisers are not planets, they tend not to be stationary. Hard to imagine Mando and the others get into weird and complex subquests to get some help while Gideon at one point, which could be in just moments, could hyperspace in some other sector and leave them with no clue where to find him.