If you're experiencing technical issues, performing a manual by deleting the %appdata%\.minecraft folder (after backing up saves) is the most common community recommendation.
: Using official or highly reputable open-source launchers to ensure the system remains "clean" of data-stealing software often found in some third-party "cracked" versions.
: Launchers like MultiMC and Prism Launcher keep game versions, mods, and saves in cleanly separated folders , ensuring one setup doesn't interfere with another.
The official Minecraft Launcher includes a specific built-in function to help users maintain a "clean" environment without manually digging through folders.