Can you suggest me some beans for a super automatic? (Portugal/europe)

Hi all. I've purchased a Delonghi Dinamica super automatic but so far I haven't had much luck in getting good coffee. I didn't expect mind blowing coffee just something as good as my old Nespresso.

I dialed it the best I could, the best setting I found was grinder on 4-5, intensity on 4 (out of 5) and max temperature. Flavor still feels a bit dull but increasing intensity or finer grind leads to a burnt or very bitter taste.

I tried a couple of beans: Lavazza Oro, Delta Platinum, Buondi (Nestlé brand), nothing felt amazing. Looking to try some alternative beans, preferably something under 30 euros per kilo shipped to Portugal. Thanks!!