chantools is pretty useful indeed. But it's not plug-and-play, you need to know what you're doing...

south_korea_ln

I had problems when I shut down a LND node a while back.
It was over my head technically difficult, but I also heard about chantools before I gave up on trying to figure it out.
I ended up enlisting help from a trusted bitcoiner / node operator; Semisol.
Semisol is usually on Nostr.

You can find him as npub12262qa4uhw7u8gdwlgmntqtv7aye8vdcmvszkqwgs0zchel6mz7s6cgrkj.
He's trustworthy enough to help with lost sats, from my experience.  Not sure if he has the time to hunt down more lost sats, but it's worth a shot to ask him.

I'm 99.99% sure he used chantools somehow to recover my stuck sats.

1GLENCoop

haimot

lightning

Recover a forced close channel

I asked a friend who knows more about it than me.
He said to recommend that you look into chantools, which may help?
https://github.com/lightninglabs/chantools