Returnal was SUPER easy for me, as I played it safe and slow. Get all the upgrades and items you can, don't take too many risks, and you should be able to easily beat it. I think I did my first clear in 3 runs, and eventually got all the fragments + real ending in about 20h. It's a VERY fun game, but I can understand people find it frustrating for being a roguelike.
as a gd player - main game gd isn't even top 500 hardest games if that lol though they showed retray - a user level, which, if you include those, probably top 3 (with the other ones not even mentioned on the list lol)