Personally, I’d say Sekiro. You need to be good with timing but the experience is much more streamlined. There’s no equipment system so you don’t have to worry about finding what’s good for you, let alone slogging it through the first however many hours to get whatever items get recommended in Top X lists. Also, I find the movement system is much more to my liking. It feels immediate instead of trying to sprint through a field of porridge. However, if porridge is what you’re looking for, Sekiro is a poor pick for you.
Lies of P is also a good pick for having tighter movement and QoL upgrades over Souls games though I dare say a lot of fans will want to drag me across the coals for saying that.