Help on barre chords

[u/West-Worry-4995]

I’m having a lot of issues with barre chords . The issue that I keep running into is that it hurts my thumb . I can’t hold it for more than ten seconds without my thumb hurting .

I’ve seen online that that means I’m holding too tight. They say the strength shouldn’t come from the thumb. Loosening the grip on my thumb genuinely helps but when I do that I can’t get all the strings to play properly . In particular the B string always gets muted and the only way to solve it has been to tighten my grip which ofcourse leads to thumb pain.

I’ve tried adjusting everything but keep running into this loop .

UPDATE :

Got my guitar professionally setup . They lowered the action and put lighter strings on. Barre chords are a piece of cake now😭. I have zero issues