I don’t reuse all my plastic bags, I try very hard not to have them at all but it sometimes can’t be helped I’ve found. The ones I don’t use go back to the store for the recycling plant.
When I buy specialty bread, bread rolls or the like often come in plastic bags with the tiny holes that are mostly air tight but not really, not especially good if you wish to freeze it after.
When I’ve used what’s needed of the rolls, specialty bread etc I pop into a plastic freezer bag (or ziplock) and freeze. Once used these bags are 99% of the time clean when emptied except for some crumbs, these are the bags I pop back into the freezer, to keep to use another time.
Knowing the bags are essentially clean if they are popped back in the freezer then they can be used time and time again until something not so clean, say last nights leftover sausages greases them up they get reused as rubbish bags or dog clean up bags.
Generally there are only 2 maybe 3 empty bags in different sizes floating around in my freezer, inside top drawer, left hand side and are easy to find.
There is nothing wrong of course with reusing bread bags for the freezer as that is where my bread lives, but I find that sometimes foodstuffs that is not bread simply get left because the bread bag is printed and you can’t see through.