I remember this episode of Parks and Recreation

I found it to be the easiest. If you’re having trouble with a boss, you can just go somewhere else and level up or upgrade your weapon before coming back. Unless you’re at the very end and explored nearly everything, there should be plenty of other bosses you could be fighting instead. Other soulslike games tend not to have as many options and I would often end up stuck on a particular boss that I had to best because there were no other areas available.

Also spirit ashes. I know a lot of people refuse to use them, but if the game gives you something that makes the game easier and you choose not to use it then that’s on you.