2 - this is actually kindof a tough spot after you get three bet. If you have been battling preflop even a decent amount this is standard (and I prefer a small 4bet much more than a shove). Everytime this happens to me vs an unknown opponent with taggy stats I get shown QQ/KK/AA/AK but maybe I'm just running bad. This is my advice based on Party 100nl games so it may not apply.

Others have given good advice for the other 2 hands