You probably need less money than you think
Almost everyone arrives believing they need twenty percent down. That number comes from an older era of lending and it is not the requirement for most first-time buyers today. Several loan programs are built specifically to lower that barrier, and Michigan has assistance programs designed to help with the rest.
The real question is not “do I have twenty percent,” it is “what do the programs I might qualify for actually ask for, and what help is available.” That is a question with an answer, and it is usually a better answer than people expect.