Best Blitz time control and how much I should play a day?

Im already playing rapid

Im already playing rapid
I really only play one game if I win the first one, Idk I know its only a few rating, but still. If I lost my first game, I would probably play until I gain all my rating back (Ik its a bad decision, I might get TILTED)
What's the best blitz time control? Also, if I'm trying to reach a certain rating, how many games should I play in a day?