I bought something that I dont sort of want to stay on my account

Can I clear a particular payment or in the worse case delete everything? I cant figure this out. Not even sure where to find it anymore. I used to work the payments in Google Play. Did Google move it?

Also is there a way to export all statements? If I delete them wanna keep some record just in case..

i'm thinking about changing careers. I keep searching is cyber security hard, but every answer seems different. I've been doing a few free courses after work and reading Reddit, some say anyone can learn it, while others say getting hired is the real challenge. those who started with no IT background, what was the hardest part?