I had a similar need and settled on tasks.org. Depending on your needs, this may not fit. It's more of a Google/Microsoft tasks replacement. It's been really nice for my needs.

Orgzly Revived deleted every list/note app I tried.

It'd be helpful to learn more about your requirements. Does it need to be open source? Any must-have features? Native apps? Etc.

I've been preparing to make the leap to Vikunja in an effort to go self hosted. I can't tell you how it is yet, but it may be worth looking into.

TickTick may fit your needs?

I've been using SuperProductivity and it's been pretty good

Been using Legendapp for about 2 years now - it's great except the android app is not great. Worth giving it a try at least I'll say.

I've just deployed a self hosted vikunja server for my work team. I'm trying it right now. So far it looks pretty well. You can add tasks, group them into projects and establish relationships between them. I recoomend to give it a chance. https://vikunja.io/