Play longer games?
What to do if 3 min is too fast for me?
yeah. slow down to speed up. Practice playing better chess on longer games where you can learn to calculate, plan and find good moves. Say G30, 45|45 or daily if you cant ringfence the time. Given time, you will then find your fast games improve. Your bullet is only repeating what you know including the mistakes, slower games will help you find and stop the mistakes and develop.

Hi.. Pretty demoralised. I played a quiet little arena this evening and lost every game on time, comfortably. I was ok up to about move 5-6 in each game but then just too slow. It was 3/0 time.
So what can I do to get up to speed?
I'm at the end of my tether
If 3-0 is too fast, don't play 3-0. It's not generally worth doing in any case. Play a slower time control like 15-10, or even slower, like 30-0, etc. That way you have time to actually think on your moves.
Hi.. Pretty demoralised. I played a quiet little arena this evening and lost every game on time, comfortably. I was ok up to about move 5-6 in each game but then just too slow. It was 3/0 time.
So what can I do to get up to speed?
I'm at the end of my tether