Hand 1 is OK. Maybe call his raise on the river. I'd probably cap it as you did, depending on who it was against.

Hand 2 is complete insanity. You have a CLEAR fold on the flop. I cant figure out, for the life of me, what you were trying to achieve with the raise?

Hand 3 is fine. He bought a free card off you, you cant protect against it all the time.