Hey & welcome!

Originally Posted by: Petterr11

While learning basic chords, I soon realized that the shape of my fingernails is curved and sharp rather than flat.

[p]It's a little difficult to see from the pictures. But in general, your fingernails need to be trimmed until they aren't in the way at all. I've seen students with the sort of problem you are describing. Ultimately they had to lean their fingers over a bit away from being completely perpendicular to the fretboard.

Some of this is alleviated by building calluses. And some of the problem was solved by gradually learning to apply just enough pressure with the finger pads. Any more is wasted effort & hinders your dexterity. As ddiddler mentioned!

Have you tried other guitars? The high action & heavy strings on an acoustic can frustrate many beginners.

Hope that helps!