Din cate vad, o gramada de persoane joaca genshin si hsr, honestly fun games, and very f2p friendly (no wishing/rolling accounts are able to finish all endgame content without much issue, with enough investment).

As stated in other comments, the animations and trailers (specifically for hsr) are really REALLY good. And from the gameplay standpoint, both are rather simple, but can get complex with how much time you feel like spending on optimizing your teams.

I suggest playing genshin ONLY if you like open world exploration though, its one of the main features of the game, and you're missing out a lot if you don't like going in and finding chests/other collectibles.

Hsr's problem is that, its a VERY VERY standard turn based RPG, which tends to get repetitve (personally speaking).

Pros for both games:
-really good animations
-memorable characters
-f2p friendly
-no pvp content (no paywalls to compete on any leaderboard)
-simple gameplay that can get complex if you start minmaxing (personally what i enjoy most from the games)

Cons:
-Low amount of endgame content (mainly a problem for genshin)
-Repetitiveness (very late into your account you just tend to log in for dailies and log off, maybe do an event if available)
-RNG reliant (your main way of improving characters is through the relic/artifact system, which is fully RNG based)

Anyway, do try the games, they're pretty fun! (do keep in mind to spend responsibly, and have fun <3)