I have worked in a similar environment. First, question your assumption that your coworkers have no drive or desire for excellence. You may find a few (or many)

I have worked in a similar environment. First, question your assumption that your coworkers have no drive or desire for excellence. You may find a few (or many) coworkers that agree with you and are willing to join your movement to varying degrees. Secondly, understand that you are in a long bet scenario. Your goals may not be achieved until several years after you leave. You may need to anchor conversations towards extremes to make your recommendations seem more reasonable. This will feel unrewarding. Having a partner or two in mindset drastically helps your outlook and staves off fatigue.