Little or no mechanical knowledge or capability

For the posters who ask "do you do your own work at home" or " why can't you do the work?" Sometimes I think that people who are skilled in this regard don't realize how gifted they are and many are not. I'm 75 so it's not like I haven't tried. But I find that it often turns out badly and I've kind of learned what to attempt and when to call someone. Incidentally I've had good experiences with mobile repair people.