To edit a save, you first need a to export the data from your console to your SD card. The following tools are the most reputable in the community:
If you are not willing to set up EmuNAND and air-gap your modding from your online profile, do not use a save editor. No amount of "verification" will protect you from Nintendo’s telemetry.
: Move the exported files to a PC to use specialized editors for specific games, such as the Hollow Knight Save Manager Tomb Raider SaveMaster Risks & Best Practices