Check the manual as there is normally a setting for how much rinse aid and salt it releases per cycle. You can adjust it because it needs to be set differently for hard/soft water. Maybe this is set wrong and that's why it is always running out.
Not rinsing is OK, but if there is a large amount of sauce left on a plate or like a dollop of mayonnaise, scrape it off with a knife before you put it in the dishwasher. Sauces are often very fatty and that will clog everything up.
It's a myth that detergent can't work unless there are food particles. That doesn't make any sense. There will always be food particles because rinsing doesn't actually clean dishes, and anyway most of the action of a dishwasher is pressurised water jets and high temperature water. The detergent helps but it's not the only way the machine is cleaning the dishes. The reason not to pre rinse is that it's inefficient because you're using loads of extra water which is unnecessary, and it makes it environmentally unfriendly. Dishwashers are designed to handle plates which haven't been rinsed.
TBH I really dislike my dishwasher, it is a Beko, I wish I had waited a day or two for delivery and gone for a Bosch/Siemens one. The Beko has this stupid "cornersense" arm on the bottom which can't be easily rinsed through so it gets clogged all the time and then it gets desynchronised from the corners so it bashes into the walls making a noise and squirts water at the door seals which then leaks out. Worst feature ever and I don't even especially remember our old dishwasher having a hard time cleaning stuff in the corners, so I'm irritated that I fell for the marketing of it. Although mainly I bought it because our Beko dryer is good and it was the only one we could take away that day with a stainless steel interior, the other ones in our budget including the Bosch had a plastic base which I didn't want.
It goes through phases of seeming to drink rinse aid and everything comes out with this horrible soapy coating on it so I think something about the bit that releases the rinse aid must get clogged up or stuck or something and release too much. I wonder if these kinds of parts are better quality in the more reputable brands.