Started trading credit spreads last week! Looking for helpful info & opinions from option sellers !

I just got enabled to sell options and my account is still on the smaller side to be buying 100 shares of things to do CC/CSP’s, so I’m focusing on credit spreads for now

I only started last week and have only traded SPY & QQQ put credit spreads so far (considering trying IWM & SOFI next week) and have been sticking to deltas <0.2 for short strike and $1 wide spreads just testing the waters.

I didnt hold any trades until expiration, I would close after passing 50%+ and just move on, one of them I got about 80% - Next week im aiming to hold until at least >60%, but I wonder how many people always just hold until expiration?

Are there any pro tips or things I should focus on right from the start that has helped others maintain consistency? I don’t want to go too high in deltas, I feel safer just stacking small, higher probability trades but would love to hear some input from experienced option sellers

Cheers!