I actually used to reuse single use bags to line all of the trash cans in my house. Now that my town banned free ones, my family has been trained to reuse. Only now I'm buying disposable trash bags and only using them once.
Fairly sure the overall impact here is worse. Especially since the heavy trash bags you buy consume much, much more plastic compared to the thin film freebies I was using before.
I do hate to see trash bags blowing in the road and know they end up in the rivers and oceans. I guess overall this is still a win, just not for my household.