I’d generally suggest take them to the library and let them have at it. if they don’t like a book/genre no biggie, and someone is doing some basic quality curation.
Some suggestions:
on the origin of findo gask - I haven’t read this but my teens recommended it to their pals and it became a bit cult - as far as I can gather half the fun is how much your parents would disapprove!
a big boy did it and ran away - high snark count and written in the vernacular (probably only relevant if you’re Scots)
Hunger Games/ divergent/ maze runner - dystopian ya
Wool trilogy - better than the above but also long books which might be too much for now.
Pushing the limits series - Katie mcgarry is pretty good and there’s plenty of teen angst and not too many long words in this series (very American culturally)
Terry Pratchett - any of them, not my genre but I know several ya male readers who got back into books through these.
Malorie Blackman- knots and crosses gets a rave review but I think boys don’t cry is a better read.
dash and Lily’s book of dares
Anything by Louis sacher - holes is a good place to start but his other books are great