Should I continue playing 30?

You get bored? Regardless of the time limit, enjoying chess is what its all about. And long game chess is the origin of chess I do so believe.
Longer games are more fun in my opinion. Because you learn and understand more what you're opponent is trying to do.

Blitz is good so you can get a feeling about different positions, patterns, endgames, openings, tactics, intuition. Watch some videos / streams by masters how they play and then play some 200-300 at least blitz games or so, IT WILL DEFINETELY IMPROVE YOUR CHESS, no matter how much people hate blitz and saying is bad. I started chess with 1 min bullet non stop for few years and see how strong i become, just recently started to play rapid and slower chess. Just make sure you dont have bad habbits like moving randomly, without checking if its safe etc. Then analyze quickly where you went wrong why etc on every game. Work on tactics. then STOP blitz and focus on longer time controls.
The problem is I see lots of threads here saying beginners should play longer games so they have time to study the board, or beginners should never resign. My moves are decent even in speed
Can I play shorter matches without later trouble?
Quick answer would be appreciated,
Thank you
-A