I was a big reader as a kid/teen, then fell out of the habit in college (wanted to be 'someone who read' but rarely had the energy to read more than a bit of escapist fiction). Then had a period of severe depression after college and didn't read. Then in my mid 30s I got impatient with myself and decided that my reading habit wasn't going to fix itself.
So I set up kind of a semi-structured program, where I consciously aimed to read 1) much more widely in terms of genres; 2) tackle harder reads (with accompanying learning materials, if needed); 3) got recs from other readers whose taste I sometimes jived with, so I had someone to discuss at least some books with.
It really paid off... it took some effort and discipline in the beginning b/c I had to set up time specifically devoted to reading, and I had to read stuff that I didn't always 'feel like' in the immediate moment. But I found that the more types of books I read, and the more I sprinkled in challenging books, the more interested I got in continuing to read.
Eventually (as podcasting became a thing) I also started listening to book podcasts and online classes devoted to literature (free university lectures, etc.). And I got heavily into audio books once that was a thing, so I now listen to most books, which gets me through a lot more than I used to be able to read... usually I read/listen to 80-110 books per year (I'll finish my 90th tonight...it's been kind of slow b/c I hit a stretch of bad books that sapped my enthusiasm, but things picked up hugely in the past few months).
In terms of where I get recommendations (apart from friends/family), the main way in the past 10 years is to look at the website Bookscrolling, which collates data from a bunch of year-end best-of list (sort of like the website Metacritic), and ranks books in several genres based on 'most recommended'. Then I scan the list and prioritize from that top 30 or top 50, and try to narrow things down.*
Recently, after my aforementioned spate of frustrating books that I slogged through part of the year, I had to re-motivate myself by looking at my lists and prioritizing some authors that I already was familiar with and KNEW that I tended to like. E.g., I caught up on some Ian McEwan, John Scalzi, Gary Shteyngart, Michael Ondaatje novels that I hadn't yet read, and it helped re-invigorate the enthusiasm that a run of annoying books had drained.
*One legit problem is that I now have a list of literally a couple thousand books "to be read" since I started doing this, and realistically I will likely never get to all of them, which is sometimes depressing. But at least I have a system that works for me.
ETA: That's funny that you don't like memoirs! I read them for years before one day realizing that my reaction to most of them ranges from a resounding "MEH" to absolute eye-rolling disgust LOL. Now I skip them.