I looked at my completed games list for last year and I finished 2.
Last year the only game I finished was Live A Live.. and that was just the base completion for each character's story... not finishing the final story with every character (just one or two). I did play a decent amount of Grand Mountain Adventure also but not enough to call it anywhere near complete (not that I feel I need to "complete" it). On the plus side, I only bought 7 games for switch last year... and between then and now have played at least some of 4 of them. The other two being DQ Treasures & Pocky & Rocky Reshrined. So I'm feeling pretty good about my ratio of purchases to at least what I've played.
This year so far I haven't bought any games but I will 100% buy Zelda Tears of Kingdom as well as anything else Zelda, DQ, and Xenoblade that releases physically (for Switch) even if I don't make the time for them immediately. I have my eyes on about 5 other releases none of which I'm sure on yet and might easily pass them all up.