Elden ring I would recommend (as long as you don't get frustrated easily about getting killed again and again)
Faster than Light is good if you like strategy games (it doesn't take a long time each try at it, and you unlock more spaceships doing some missions), but sometimes the randomness can be a bit hard, like "oh, do you choose to help someone in need of help? Well, either you get nothing, you get a bit of scrap (what the game uses as currency), or someone on your spaceship will be lost forever!"
Atelier Ryza haven't really played that much so I can't say
Rune Factory 4 is a Harvest Moon with fantasy elements, so it depends on if you like both fantasy games + farm games, but I would recommend the third one (Rune Factory 3) if you want to try instead
I can't even remember how many hours I spent with the first Disgaea... Without even being able to understand the language... I liked the second one too, but because I like the designs of Rozalin, and I also played the 5th one.
With Rune Factory, the one I spent more time was the 3rd one, because I LOVE Raven, and the 5th one because I like Fuuka (huh, I guess I always loved redheads and I didn't even notice...)
The problem I have with both, is that the sequels added QoL features that I don't know how I could play without (especially Disgaea, as the combat when I tried to play the first one was a bit "slow")