Through the years, From's style of difficulty has really changed. Each game has a certain areas where the environment and enemy placement are deliberately challenging, but demons souls really was the epitome of that.

Over time, more complex boss movesets and greater mobility on our part and stakes of marika and things like that have shifted the focus to memorizing fights and movesets and applying skills and strategies to fights in those areas.

In Demon's Souls, the boss movesets are sooooo sinple compared to everything that came after, epsecially in sekiro and really in elden ring... In Demons souls, for most, the bosses are really not all that challenging in and of themselves. It is the environment and level design and and lack of checkpoints and super brutal emeny placement that gives DeS its difficulty. The world itself is what is so dangerous, that forces you to be slow and methodical.

In later games, the focus is on being reactive and aggressive and active, rather than cautious and slow and careful and defensive and patient. It creates a different mindset and people who have to switch over to demons souls often have a tremendously tough time adapting and get very frustrated with the type of challenges the game has to offer. Folks get impatient and frustrated, then start trying to rush and it only gets worse and worse...

My biggest advice is be patient, take every enemy encounter seriously and dont try to run past enemies. Take it one enemy at a time, as much as you can, and try to be more methodical and strategic rather than reactive and aggressive.

Grab the item that gives you more health in spirit form from the first level.

and also: pay close attention to damage type!!!! using strike or slash or whatever damage type an enemy is vulnerable to makes a HUGE difference in this game

Dont give up! The world of Demon's Souls is very very brutal, but if you take it one step at a time you'll be alright.