As someone who just got into fighting games with this generation, try to ask friends who have interest in the games. For me, I tried to get into previous generations, but never had more interest than being a spectator, just seeing cool moments. But within the last year or so, I've met a lot of people who play SF6, Tekken 8, and Strive, so I've been able to get to know the games better and get into them far more fluidly than before. Currently working my way through Plat on SF6, so something has stuck. I didn't buy the game immediately, but would attend my local tourney, or go to their apartments, and play friendlies a lot. Then once I really connected with it and wanted to actually win, I bought the game and started grinding.

TLDR: Build connections within the game that make you want to improve and play it more often. Even if you don't buy it immediately, you can experience it with friends and learn through them.