Will McDonalds change much in the next 25 years or will they remain pretty much the same?

Might change superficially, but I don't think they will change much outside of that. They have a good thing going.

Robots might be serving the food by then.

Well idk. They might change prices? I bought one itty bitty hamburger and fries & it costed me 20€. I'm confused

It will. When self driving electric cars become the norm battery time and line waits will forever alter how they do business. You'll pre order before you stop and the entire drive through will become an automated 10 second pickup. Eating inside and larger staff will probably disappear.

I do not think that McDonalds will survive the next 25 years, considering the fact that more and more people are becoming aware of the problems that are connected with conventional fast food.

They might bring back the McRib.