The problem with tech support in general is that people want to have a trusted source. If you are successful in your endeavour, then you are that source. Therefore you will be called for everything. Absolutely everything.

Suddenly all people forget how to search online themselves or to actually look at the problem before reaching out. Not even a turn it off and on again mentality. You are now their source and will do everything for them.

Then it degrades from there. Problems become vague descriptions of "acting funny" and you spend far too much time trying to get accurate descriptions and scenarios to understand the problem before even being able to try to troubleshoot it.

All this jaded negativity is just me making a point that reasonable charges won't get you very far. You will need to charge more to cover the time (yours or help) and then you will be deemed too expensive and people won't call.