How can I get better at bar chords?
It's all about putting in the time to build up the strength. To help you with the process, make sure your guitar is set up to be as easy to play as possible. You can also put lighter gauge strings on your guitar and have the strings lowered to be closer to the fretboard.
We would also recommend checking out this lesson from the Guitareo Riff. Consistent and effective practice will allow you to see results and reach your goals as quickly as possible!