1) easy check/call on the river and i probably fold to his minraise, i doubt hes raising u with the Ts.

2)3bet way more preflop, like $20, i would just bet/3bet the flop.

3)3bet way more preflop again, like $12. You can block bet, check/call or check/fold based on reads/feel, i wouldnt check/call a psb on though.

4)preflop is fine, Flop is fine, Please push that turn, as played push river.