De Longhi Ecam 35x.55, drinks setting

Hello everyone
, I have recently bought Ecam 35x.55 Unfortunately, my espresso won't work with these preset buttons. In my opinion there is too little espresso in the cup and it tastes not good but rather sour. The machine still runs on the factory settings, only the grind I have changed from 5 to 4 (from a scale of 1-7). The infusion takes about 11 seconds (without preinfusion, don't know if you count them). How can I set
it to last longer.

I can't find anything about this in the manual. Only the aroma can be changed spontaneously by selecting 1-5 "beans", but I don't think this is the

solution.

Google partly says that you cannot change the preset drinks, which I find a bit strange. So you would have to create a personalized drink list like this. But I don't really need it, or I just want the preset buttons

to give

a reasonable

result.

Thank you very much already

! GreetingsYochen