I like Material Symbols best. Largest selection AFAIK and simple enough that you can create unique ones that fit in.

My only issue with Material-anything is it immediately looks/feels to me like something Google-related.

Not a deal-breaker entirely, but for my own things I like differentiate.

	▲	coolewurst 2 hours ago \| parent [-]
		I see your point and like to do things myself, just so they're mine, but I feel like there's only so many ways to skin a cat and draw a plus symbol. Most users will not care if they have seen a map icon in another app before anyway.