Play more and more games to gain the speed and learn Openings like KIA or certain move that you can use against any opening or at least for most of them
How to get better in games with fast time controls?

Thanks!
I've played around 500 bullet games, but I don't really play VERY fast, so that I won't risk losing a piece.

just use the time in your advantage....eg close the position and play some little moves togain time advantage over your opponent while he tries to crack your defence ...then maybe open up the position and attack to win on time or mate....and if you lose by a rook or a knight in bullet games you should keep fighting because you can stillwin on time or your oppenent make a wrong move on time...
Actually, this question has a simple answer: to get better at speed chess, first get better at chess! If you play slow games and work hard at learning to count, calculate, and make good decisions, all this will make you a much better speed player too.
Totally agree

Actually, this question has a simple answer: to get better at speed chess, first get better at chess! If you play slow games and work hard at learning to count, calculate, and make good decisions, all this will make you a much better speed player too.
Thanks! I slowly am playing more and more standard games these days.

Very Easy Answer --
- Add a 5 or 10 second bonus to whatever speed(s) you play.
- PRACTICE, and STUDY, all phases of the game, (but especially endgames).
Game in 3/5 up to Game in 30/10 will give you all the practice you need.
Instead of Game in @5 hours, you should (perhaps) STUDY chess instead.
Don't be surprised if you Blitz strength is 200-300 points weaker than you OTB strength.
It depends on age too. Your reflexes slow down, later in life.

i think the best way to get better at faster time controls is to play a lot of slow games. this will give you a database of knowledge of tactics and positional play that will help you play better at blitz and bullet. i rarely play bullet but when i do i play phenomenally. this is because i mostly play 5 mins. also, some days i decide that for weeks i will only play 15mins. when i get back to blitz i am able to implement a lot of cool ideas.
To play better at speed chess you need:
(1) a good mouse
(2) a good internet connection
(3) a good grasp of chess tactics and positions
(1) and (2) are easy

Thinking well in speed chess can be solved the same way as thinking well in slow chess. In fact, they're about the same.
The second piece of advice is just to practice. If you have a goal of a certain rating at 3-minute chess, you may want to practice at 1-minute chess. After 1-minute chess, 3-minute chess feels like a lifetime!
Can anyone please give any suggestions?