It happens to everybody.
Were they local or remote initiated?
Is your node under heavy load (100%+ utilisation)?
Are you on tor or clearnet?
Check for errors in lnd, bitcoin and potentially tor.
It sucks with the current transaction fees!
Discussion
Thanks for the response. On tor. I think I’m under heavy load but don’t really know why.
What do you use to see if they are local or remote initiated FC?
Tor can be very unstable at times and there's nothing you can do about that.
I had heavy load since the blocks became busy few months ago. I had to shut down all other apps besides the core: bitcoin, lnd, electrs, thunderhub to get my load below 4.0.
Thunderhub will tell you who initiated the closure. It's under closed channels.
I'd recommend official umbrel telegram chat or their Forums to get detailed support!