#1: pretty obvious you are beat after he pushes on your 3-bet
#2: raise more preflop, 3 limpers before you, i make it at lesat 3.50
#3: you have absolutely no reason to push the turn here, you got raised on the flop on a threatening board, which usually means draw or monster, and the draw completed on the turn. you should learn to control tilt before you move up