They require a different mindset and approach than many other games. You can view it as a test of will: your victory is inevitable since every time you die, you respawn and have learned a little. The game tries to make you quit, not by being unfair but by punishing laziness and corner cutting. The rewarding feeling you get when you finally, initially through stubborness and eventually by skill beat a difficult boss is immense. The videos of people easily dodging attacks and showing restraint in their attacks beat difficult bosses - that will be you eventually. Just accept that dying and trying again is an integral part of the experience, it does not mean that you are bad at the game. There can not be a feeling of accomplishment and achievement if there is no resistance, no? Go and have fun! And remember, there is no "wrong way" to play - all the mechanics in the games are there for a reason, so use them!