Terrible twos

I need some advice because I am very overwhelmed with my two year old. I swear as soon as he turned two he changed and became naughty. He likes to fight, throw toys, he doesn’t nap and it’s so hard for me to put him to sleep he never wants to sleep. In the car he cries because he doesn’t like being strapped in his car seat. He can’t even watch tv quietly, he constantly complains he wants to watch something else or wants the remote and cries. I have an older son and never had any of these problems. I have no idea what to do. Any advice?