I'm an avid reader. I read books on Kindle, in physical formats and on audio. I like nothing more than a good book and I've been like it since I was about 6, when reading fell into place for me - I remember standing near my teacher reading aloud to her and realising I'd got it. I've got a few academic credentials backing up the tons of narrative I've consumed in one form or another, but if I had to single out a favourite genre, it would be crime fiction. This can be very high-minded (eg, Bleak House, The Secret History ) but it also encompasses gleefully low-brow penny dreadfuls, full of 'orrible murders. Having a literature degree or two doesn't oblige you to only imbibe highbrow fare and many keen readers stress the pleasure to be had from a mixed diet of classics, literary fiction, romance, crime, spy, psychological thriller, historical, Westerns, science fiction, fantasy. . .another thing to be aware of is when people insist that reading improves your character and makes you a better person. Apart from the fact that a great many of the nastiest people on earth are and were big readers, many of us aren't at our best when someone interrupts our reading - especially when it's really good. Some years ago, I discovered Carlos Ruiz Zafon's Shadow of the Wind and turned into a hungover wolverine when anything or anyone tried to get between me and it. Writers (mostly) want to entertain us rather than improve our characters, so I wouldn't take assertions of moral improvement through the written word too seriously.
I wouldn't want to suggest that any form of activity was better than others, but there is one caveat: our increasing screen time and the mountain of evidence warning us about it. But reading isn't the only way get us to put our phones down; if you preferred, you could garden, bake bread, coach five-a-side, play chess, or buy every puzzle book you could find and spend your free time having fun with word searches. They all offer your mental and physical health benefits that doomscrolling won't.