What problems are you having with tubeless? I'm the opposite, I try to avoid all tubes if possible.
The issue I have with tubeless is the maintenance, and in the event where you have a full failure of the tubeless (hole not sealing, bacon strip not helping) putting a tube in the tire on the side of the road with sealant everywhere is NOT fun. Hapened to me last week...
So I'm giving TPU tubes a try as I'm a new-ish cyclist and never ran tubes, always had tubeless. And since I'm switching tires because mine are probably cooked since I've been getting a lot of small punctures the past few weeks, I'm thinkink it's the right timing to try something else.
Might come back to tubeless but then I'll know both sides of the story