a minimum expectation from me would be they understand what I'm explaining and have some technical knowledge neither of which they had. I had to resolve myself with use of Google.
Same fundamental problem as the people delivering cookers and washing machines: If you have any tech skills worth speaking of, the last things you're going to want to use them for are:
a) Up-selling whatever shit computer
[1] has the highest profit margin in $electrical_retailer.
b) A callcentre monkey job reading from a script that tells people to turn things off and on again, and if that doesn't work, buy a new one.
(With the disclaimer that (b) is often a gateway into proper tech jobs for people with no formal qualifications, so you do occasionally come across a monkey with brains.)
Local Computer Shops are likely to be a little better, competence-level wise, but commercial pressures are still commercial pressures.
In general, you really are better off googling, or asking on - say - a cycling forum. You'll get more knowledgeable people who are more invested in actually solving your problem that way.
[1] Are Packard Bell still a thing?