Hi @kyle_entity! Thank you for reaching out.
As a first step, can you help check if you have read all special Notes throughout the doc that you referenced above. E.g. there is a special note about using MySQL / PostgreSQL.
I’m wondering if there is something outdated in the doc as another person just recently posted about a similar issue, which I’m also working on troubleshooting.
Could you also check whether this recent thread might help: Service Unit File Needs Updating after Upgrading to Mattermost 5.0.0