It is actually hard when you start out because the game dumps you in there with a heavily upgraded skill tree and explains nothing about what cool stuff you can now do. I opened the skill tree myself and looked at all the skills and then practiced a bit in the combat simulator before going back to the boss after getting my ass handed to me for 20 minutes and that helped a lot.
Also you have a ton of different gear in your inventory, you can customize your build to deal more damage or make parry/dodge easier. The default build you're given is very defensive with a longer shield bar but you're not supposed to stand there and hold block for the boss's entire combo chain anyways, feel free to change your build up to suit your play style!
The game has some pretty noticeable input lag to when you push a button and when Eve does something so if you're coming from the tight and responsive controls of From Software you will need to adjust a bit. Parry and dodge timing requires you press the button a bit earlier than you would in Elden Ring or Sekiro. I've been reading on the Internet about people saying the game controls feel "floaty" or "weighty" and what these people are saying is they notice the input lag but don't know what input lag is. Were I the devs, I would try to tighten up the game's main loop to reduce input lag so players can have more responsive feeling controls but I'm not privy to the game's technical aspects and don't know if the input lag is intentional or fixable.