I also got into kpop during 2019, but I think 2021 was my best year so far in terms of songs I fell in love with. I felt like there were more songs that didn’t age so quickly which was nice. I hope 2022 will be even better
2021 was the first year I was super active in the fandom so I'll say 2021. I discovered so many new songs and groups, Dreamcatcher and Ateez releases were consistent bangers, so much happened positively last year. Admittedly I haven't been here for long, so hopefully there will be plenty of time for more years!!
I would say 2018. Even though I discovered Kpop in 2016, 2018 was the year I first became super active in Kpop life. Most of the songs that were released in 2018 became icons and super bops and there were fewer controversies and problems. If I remember correct, 2017, 2018 and 2019 were kinda peaceful years for Kpop stans. So these years are my favourite Kpop years.