Having have a camera with you at all times, is the best way to improve your photography.
Even if you’re not using the camera, just playing around with settings and taking a picture can be very illuminating.
DSLRs today are so complicated I still find features I have not used so anytime I find myself waiting around, I often dig out the owners manual to see what a button does.
Those technical writers of camera manufacturers don’t always explain the ins-and-outs of their hardware very well unfortunately.
So it can take even season users a while to truly get how a feature works.
Sorry smartphone users, my biggest beef with them is there is no reliable way to control the depth-of-field so until such time they give you aperture control, I can’t consider using it beyond documentation purposes.