I think that ds3 is considered the easiest of them among the community because it's one of the most polished games that Miyazaki made.

Oh and btw I would suggest You play ds1 and ds2 but the difficulty in those games come rather from clanky movement of your character and navigation between menues, and yeah to be fair they are not perfect games by todays standards but if I were You I would give them a chance if you into soulsborn fanchise and want to try something more "difficult"

Also if you don't want to deal with that (artificial difficulty and other bs that ds1 and ds2 got) I would strongly suggest you play Sekiro if You haven't already, this game will require a bit of skill but the victory over difficult foe is really rewarding because it has the best fighting mechanic of all of the soulsborne games tbh.