I cannot roleplay (I’m really bad at being anyone but myself).

Therefore I need my character to be as close to me as possible (within limits ofc, like she doesn’t have to be human or anything).

Therefore, I ideally need someone who can’t stick with anything at all long enough to get good at it, but who is reasonably proficient, as a beginner/intermediate, with everything they have ever come across, even in passing. Bonus points for being mostly useless in a practical way, but having huge lore skill bonuses as a tradeoff from the multiclassing.

This multi class is exactly that. It’s all the hobbies I’ve picked up and bought supplies for and never did again. And like my supplies, you have to be cunning to use that hodgepodge to get something actually useful (barely related to the existing hobbies) done.

There’s a whole world of possibilities for how to run something like that and make it enjoyable (even if not always/often super useful - like buying all the equipment that doesn’t put you over encumbrance).

(I don’t think I’ve ever single-classed a campaign, I’ve always at least dual-classed, and often mixed-race too)