Complicated Apple ID saga

I had my screen changed by a phone-fix guy.

I noticed a few unwelcome developments almost 24 hours after he’d done with the fix…..

I notified him about it so he asked me to come over so he could review my complaints about the device..

I went over gave him the phone and left him to do his thing.. he eventually reset the settings of my phone without my consent and I wasn’t aware of it.

upon retrieving my phone from him I noticed that my wallpaper had gone to the device's default wallpaper.

and soon my device requested I enter my password for my Apple ID… I entered wrongly… I hadn’t realized I couldn’t remember it until after several trials …

Apple finally locked me out and has been requesting I recover via my RECOVERY KEY.. which also I don’t have access to .. and I can’t log in with a new or different Apple ID without first turning off Find my iPhone via still the same forgotten password which all brings me back to RECOVERY KEY..