First you need to download MSI Afterburner from this link: https://www.msi.com/Landing/afterburner/graphics-cards
Instal and open MSI Afterburner
In the MSI app you can change CORE CLOCK and MEMORY CLOCK (higher is better). That will increse you'r performance in games and its absolutely safe.
If you put CORE CLOCK or MEMORY CLOCK too large number, you'r pc may restart on it's own or may freze and need to be restarted manualy.
Find the biggest number on CORE CLOCK and MEMORY CLOCK that won't freze or restart you'r pc for the best performance.
Don't touch any other options in MSI Afterburner and you won't brake anything, it's 100% safe and it won't affect graphic card lifespan at all.