F Major & B Major belongs in a cuss class by themselves. I’m like you one of the new guys. You just have to keep moving your fingers, lower your thumb to allow you to put more pressure on your finger. Then one time after putting down your guitar in discuss, you pick it back up and bang you hit it. “Yea.Yea,Yea” and in my case the family looking at me like I had grown a second head. I said “did you hear that”? Only to get from them “Hear what”? Hang in there brother you will get it.