Humans reviewing bans and reports is not possible, come up with a better solution

There are a large number of posts right now (and always) about how bans and reports should all be reviewed by humans and not just bots. Now there are thousands and thousands of games every day and in a large majority of them someone gets reported for something. And then in most of those cases, people didn't really do anything ban worthy (unless it was repeated behavior which can be seen by bans in many games). Now I do not understand how riot is supposed to review every single case where someone gets a ban or every single chat log from every single game where there is a report. It would take literally thousands of paid employees working full time to review every single case that the average player wishes could be reviewed. Maybe the system can be improved, but riot isn't going to spend millions on something that will in the end only result in less people playing the game because of bans.