And once the CC are paid off you can mostly use debit cards anyhow. Keep a couple CC active though and pay them off right away.
I keep 3 CC active and they take care of Cellphone, Internet, Streaming services. Just setup auto pay for the full amount every month.
My ex business partner was horrible with $$/Credit. Was paying $225 a month for car insurance even though he had a clean driving record (fortunately some states have outlawed the practice but not enough).
I put him on as a named user on two of my cards and in 90 days he went from a 545 to 630. Was able to get his insurance requoted at $75/month.
Then being the idiot that he was: He gets a pre-approved Amazon Chase Visa with a $2400 limit. I told him: Put your cell phone bill on it. Setup auto-pay. Cut up the card.
What's he do? $2200 drum set. Idiot. I took him off my cards and let his credit return to poop and negotiated a buyout.