Looking on the internet deeply has found these results:

go to the university is the most popular phrase on the web.

go at the university 12,670,000 results on the web	go to the university 1468,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	With this grade, you won't be able to go to the university you want. I'd like to go to the university to study Economics. The school was closed, it arrived to Kiev If he isn't in a hurry because he must go to the university, he succeeds to have breakfast. to go to the university. When I was in high school, I wanted to go to the university. I want to stay right here at home and go to the university. Just take the test first, then decide later whether you'll go to the university or not.

go at the university

12,670,000 results on the web

go to the university

1468,000,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

With this grade, you won't be able to go to the university you want.
I'd like to go to the university to study Economics.
The school was closed, it arrived to Kiev
If he isn't in a hurry because he must go to the university, he succeeds to have breakfast.
to go to the university.
When I was in high school, I wanted to go to the university.
I want to stay right here at home and go to the university.
Just take the test first, then decide later whether you'll go to the university or not.