If you meant your friend said you shouldn’t play 3 minute games then I agree with them.
You’ve complied with your friend’s suggestion and switched to 10 minutes but you haven’t switched the amount of time you are using and the amount of thought you are putting into each move.
In your last 3 games you ended the match with only using 30 seconds, this resulted in some brutal blunders. Try slowing down and doing some more calculating.
After you lose you should take a look at the game and see what happened. This would hopefully lead you to the same conclusion as I wrote above. It’s ok to make mistakes but you need to learn from them to improve.
ive started playing very recently and pretty much suck, one of my friends suggested that i should playing 3 minute games, i complied but after playing 5ish 10 minute games i lost each one of them and seem to be falling towards 100, is there any way i can improve?