Hey everyone.

I am learning Barre Chords and have been working out my hand with a stress ball so barre chords are coming along smoother than expected. So far I have only been practicing the F Major Barre Chord when the first fret is barred and my other fingers are in an E major shape. One issue I keep bumping into is that all my strings are either nicely fretted or barred except the B string is muted. I tried moving my thumb to be on the bottom of the neck right behind where the B string is to give some added pressure. It helps a little but the most I can get is a buzz. I'm curious as to why its this string in particular and if there are any tips. If it helps, I have very long skinny fingers and a XXL sized hand.

thanks!