Same problem. The slower the time the better I can play.
How to get better at blitz?
I just a wrote a blog with eight relatively easy ideas for improving your blitz results:
Improve your blitz results in eight steps - Chess.com
There are some associated videos with more detail here:
Improve your blitz chess - YouTube
Good luck!
Practice managing your time effectively during blitz games. Aim to make moves quickly, especially in the opening and middle game, while ensuring you don't rush into blunders. It's essential to strike a balance between speed and accuracy.
In blitz chess, tactics (and openings) are quite important, maybe even the most important. You need to spot patterns fast, imagine the position, and do calculations quickly. I made a workbook with exercises to help you with that. You can get it for free here.
The best way to get better at blitz is simply practice. Learn how to handle time pressure and some powerful openings so you don't waste time thinking about which openings to play. Solve puzzles to get better at tactics, and much more.
Practice is key, there is no such way to get better at blitz in an instant.
Slightly off-topic:
' ...sometimes I am unsure of what to do in openings...I use database if I'm unsure'
What did you mean by that?