A fast way to optimize my PostgreSQL & MySQL databases automatically.

As a software engineer/DevOps, I would like to see my slowest queries and receive recommendations along with a newly rewritten version of the query, optimized to run 10 times faster. These optimizations could potentially save my team an average of 50 weekly hours, which are currently spent manually optimizing these queries.
I would like to perform these optimizations directly from Aiven's console.

Additionally, It is critical that the optimization process be 100% non-intrusive and not require access to my databases' sensitive data.