Plus one can organize his own tasks.... That's why I thought about it...

Why not kanboard?

Personal data.

They also moved a free domain that I have let expire to the paid ones, so if I wanted to renew I would have to pay... Which is kind of fair... They should also make money from somewhere...

When buying a domain read all the details: renewal fee are mentioned there. For me they were turnoffs in some cases.

I now have a .ovh as a cheap alternative. Iirc they are dirt cheap when you reserve the domain for 3 years...

Warning: tk domains registrar has 0 GDPR.

Might be irrelevant now, but I didn't managed to delete my data once I wanted out

I would say the opposite: self hosting nowadays is very easy. Is the multitude of options and configuration possibilities that is daunting. We want too much and this increases complexity.