barre chords one finger

hello!
How i can do barre chords with one finger over 3 string?
My 3erd finger is not flexible.

Practice my man. Stretch you fingers and hands before you play. Drink water. You'll get it eventually.

What you said is pretty impossible dude. Like GS said, just keep working at it. You'll get used to it.

I don't see how it's impossible... he said 3 strings, not 3 frets.

Your finger would be like this / but more extreme though lol. I'd have more hand cramps doing that than a normal barre chord if I was him.

you do a bar over 3 strings every time you play a minor barre chord starting on the E string or a major chord on the a string

Yeah. I think he might be asking about playing a Major Barre chord with the root note on the 5th string, thats probably the most common place to barre three strings with one finger.

i always just use 3 fingers, but i try to avoid doing chords like that tho, i suck at them, or just play it powerchord style

Sorry! i mean 3 frets. like C D Eb Bb etc.
What about the pinki finger?