The Megaman series feels difficult to me too, the Megaman X series feels difficult but it’s got a soft spot due to when I was growing up. I highly recommend the Legacy Collection for megamanX, it gives some features the originals were lacking that were infuriating (like remembering passwords in order to ‘save’).

20xx and 30xx are ‘spiritual successors’ to the Megaman X series, but it’s a rogue-like, meaning portions of it are randomly generated and when you die you do start over and the power ups you get are not set in stone in terms of order or whether you’ll see them at all. So if you liked Megaman X but wanted something that’s got an ‘active’ community and even co-op, it’s definitely worth a look.