We migrated from Slack to self-hosted Mattermost so we avoid being down. (And I guess money.) Mattermost is so much worse that the slowness and general issues

We migrated from Slack to self-hosted Mattermost so we avoid being down. (And I guess money.) Mattermost is so much worse that the slowness and general issues are not worth it. And in the end it is more down than Slack ever was, because it has performance issues. I am not sure if it is Mattermost fault or our fault; but my friend from other corporation has similar experience with it. But maybe in general just don't know how to host MM, I donno