You can just shove preflop vs most guys.
If you know they have some terrible tendencies or there's a good reason to 3bet small there (there can be for sure) then I would probably suggest check folding.  You aren't getting any value from weaker hands and you're not really folding out better hands vs most w the pot being about what you have left in your stack.  It's not like you can get most players to fold KQ and it's not like most players are calling a shove with 22.
Shove preflop or as played check/fold.

A lot of scenarios there.
A lot of times I just shove vs most players when facing a raise with those stack sizes.
In the lower levels, if you notice a guy doing something like calling big 3bets (or just calling raises and not reraising in general) a lot of times it's probably more profitable to make that 3bet that leaves you with a PSB going into the flop.  This is commonly referred to as a "go and go."
At the higher levels I don't think it's nearly as good or usable as it is in the lower games.  The players at the lower and sometimes mid levels just play so much worse in those spots than they do vs a shove preflop, that it's often times a lot better to use that go and go.
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As for that scenario with a hand like AQ.  On a KQx board vs a player that might bluff, you might as well check it and try to pick up some value from the weaker part of his range.  The board likely won't get much worse for your hand, so there's not much to think about in the way of "protecting your hand."  At the same time, the turn card isn't going to ever push you off your hand in a 700-1k pot with your stack being about the same as the pot.  A king turn is not too bad bc it means he's less likely to have a king, an ace turn gives you two pair.  A jack turn may be the worst card for you, but hands like JT or AJ then give you value, so there really isn't a big scare card to be worried about.
On the value end of the hand, you probably won't get a ton of value with your AQ on a KQx board from most players on average, so checking is a very reasonable option when factoring in the previous paragraph.
In these sorts of spots I usually suggest to just think about what you gain from betting, what you gain from checking and the various types of hands they have (and various types of turn cards that coorespond with their hand).  You can arrive at the correct decision most of the time by just taking a few extra seconds to think about the types of consequences to your decision.

I feel like 3bet pots is a serious leak in my play.
Maybe you can make a special video about 3bet pots? Some hands in replayer and presentation (possible).

I'll talk to the other guys.
It's really tough to make a video about specific parts of the game (3bet pots, small PPs, etc.) bc you can't control at all how often those things pop up and if you try to force the issue it ends up being a bad or unrealistic video (I could 3bet every hand to get in 3bet pots but it wouldn't be true to how I usually play).
Best bet is that I'll keep recording videos and if I get into one with a lot of 3bet pots it'll be something I'll talk about a lot, therefore it will more or less be a video of "3bet pots."
I'll mention it to the other guys, however, and see if we have any other ideas to go on.  I felt that some of my most important leaks that I fixed when moving into the 110 buyin level had to do with 3bet pots.  Some concepts I just picked up and did well with, others I was just clueless on or thought I was doing the right thing.  Like I said previously, a lot of it has to do with thinking about what you're accomplishing by betting or checking rather than "I'm betting bc I 3bet preflop" automatically or "I check bc the board missed me."

At HUSNGs with starting stacks 1500 i thnk these are the levels (25/50) that i feel most unconfortable in regarding 3 bettng, so either i min. 3bet or shove it all up my opponents arse ;)
Mike