The UMN-Duluth website states that the MSEP tuition is now $13.8K. The MSEP site must be out of date - sorry for the error. However, they do have merit scholarships starting at 3.5 GPA and 27 ACT.
If you can’t afford that, you could start at Lake Superior College in Duluth, MN, get an AA and outstanding grades and transfer. The MI resident tuition there is $6500, which could mostly be covered by a federal loan. You would still need $7-8K to cover room & board, so start working and saving now. (Lake Superior does have boarders - they share apts with UMN-Duluth students off campus or they can board at UW-Superior.) Duluth is a nice place to live with lots of college students.
The key to getting merit scholarships is applying to schools where you are above average in stats. So do consider applying to places like UMN-Duluth as well as UM-Ann Arbor (a reach), MSU, MTU. CMU and EMU might work as well.
Minnesota State University-Mankato gives in-state tuition to out-of-state students meeting any one of the following requirements.
From the website:
"In-state Tuition Requirements for First Year Students
High school 2017 or later graduates who meet any of the following requirements will automatically receive an in-state tuition scholarship: rank in the top 15 percent of their high school class, have a GPA of 3.8, have an ACT composite score of 25, OR have an SAT Total of 1220 (March 2016 test or later)."
In-state tuition and fees total slightly over $8,000 a year (up to 18 credits/semester), but room, board, and books would be additional.
If your parents are unable or unwilling to pay anything, your best bet may be an online degree from one of the less expensive public universities which now offer such degrees. Many of them charge no extra out-of-state fees to fully online students.
It can be expensive to take the standardized tests and pay application fees for colleges. Talk to your guidance counselor and start developing a good, respectful relationship with them. They can really help your applications and you need them on your side. Often these are the people asked to nominate students from their high school for different awards. And the more they know about you the more opportunities they can send your way. They can also help you get fee waivers.