Even if you think you aren't good enough, it's not hopeless. For a long time, I had the same experience as you. Imported Demon's Souls for the PS3 back in 2009 but just couldn't make any meaningful progress. I tried again with Dark Souls when it came out with a similar result. I had written off these games as too hard for me.
Then on my third attempt, this time with Bloodborne some 4 years ago, it just clicked. Four years later and I've completed Bloodborne, all 3 Dark Souls games, Sekiro and Demon's Souls both on PS3 and the PS5 remake, plus any DLC available for those games. It's never too late to discover that you probably are good enough.