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I’ve picked guitar for a long time and it took me forever to learn to “shape my fingers as Bill suggested in his reply. That simple, yet hard, at times to accomplish fingering will help you play much cleaner. As Bill suggested you may need to adjust your wrist angle and move the palm of your hand, up or down or closer to the neck. The thumb may need to be firmly repositioned also.
My finger tips are almost at a 90 degree angle to the fretboard when I am playing really clean chords tones. I do not use the fatty part of my finger but the actual tip close to my finger nail when I am chording correctly.
When playing electric guitar you can learn sloppy habits that do not transfer well to the thicker necks of acoustic guitars. The angle of the guitar neck from horizontal to more of an upward angle can also change your finger positions. Classical guitarist learned long ago that a steep neck angle helps hand and finger positions. There are some chords that I need to almost use the “classical” angle on to achieve a cleaner tone. Hope this helps you.