Make it joyful

Read books yourself

Make book an important part of your life

Read to the kids

Teach them to read early

Little to no phone use early on

This is one of those questions non-parents ask.

Kids come out as a person, with strong opinions and desires. You can shave off some rough edges, and maybe bend a few branches of their experience.

But if you present a kid with the opportunity to read, and they read, you can’t take much credit. That’s just who they are. Others are given the opportunity and don’t.

You can fail to provide the opportunity, but after that, it’s pretty much up to the kid.

As a life long reader, on my own, and to my kid, including many a night time baby -> toddler -> easy chapter -> harder chapter read, my kid doesn’t read books. Certainly competent to do so, but just doesn’t. Possibly we could have continued to deny access to Netflix until later (it was 1 hour a week until about 10). No YouTube allowed. Still, didn’t read. Other kids do, and I’m jealous.

We read to them from a very young age, and kept doing it. They are 13, 11, and 7 now and we still read books together every night for the littlest one, and most nights for the older two. My wife loves doing it and finds that it is solid bonding time.

We also instilled in them that it's a good thing for people to do on their own, and have slowly been providing them guidance on what "good literature" is by providing a constant stream of recommendations. We let them choose whatever they want, of course, and don't for anything on them. They are in total control.

Beyond that, we've taught them that the library is a nice place to just hang out. It's quiet, safe, and theirs as much as anybody else's. We are stuck living in a tiny apartment in a city in the US, and for them being able to just go to the library and have time to themselves is a positive for everyone.

Lastly, we've tried to give them a sense that language itself is fun and beautiful. Lots of word games. Lots of learning weird, esoteric words that nobody else seems to know. They get a kick out of it and so do we.

I learned to read younger than most, and could read well, but never really liked it. My parents tried the things in the other replies you got, but none of it actually worked (reading to me in particular my mom is convinced did it, but she never realized I was mostly ignoring her and watching other kids play).

I actually remember specifically what it was: finding this book in the impulse-buy section of our local Walgreens when waiting at the checkout line at about 9 or 10 years old: https://animorphs.fandom.com/wiki/The_Forgotten

For some reason I was big into animals, so that cover really caught my eye. Up until that point I knew almost nothing about sci-fi, so this and the rest of the series was basically my introduction to the genre, which is still the majority of what I read.

So my basic advice is a bit vague but: find a book on a topic they'd like, with a relevant cover, and somehow position it so they discover it and curiosity takes over. Don't push it on them, they'll probably just assume it's something you like instead of something they'd like (which was the case for almost everything before I discovered sci-fi).