Atrocious bubble play

[Pokey]

Hand 1: Hero has K5o and folds in SB. "should I have pushed the BB all in here?!"

Yes. K5o is a 55% winner heads-up against a random hand. You're getting 1.5:1 odds on a push even if you do get called, and BB will fold here reasonably often. This is an EASY push.

Hand 2: Hero is Button with AQo.
1 fold, Hero raises to t2010....

Your chip stack is deep enough that I'd do a smaller raise, bringing it up to t400-t600. Of course, if he pushes all-in you've got to call, and if he pushes all-in on this flop, you would have to call that one, too. You were doomed to bust out on this hand. Don't sweat it -- nobody has an ITM of 100%.

Hand 3: Hero is Button with JTo.
Hero calls t200....

I'd probably raise this to t400-t600 preflop, depending on what was getting people to fold. On the flop, I'm betting big -- at least pot-sized. If that works out to be 1/3 of my stack or more, I'm pushing this flop.