We all come across thousands of ways to save Gmail emails.
Gmail Emails can be archived via
1. Download Message Option
2. Google Takeout - A good option saves via Google itself, but crashes a lot, and oftentimes, data gets lost.
3. Using Thunderbird or Outlook - they allow you to save in bulk, but can have complexities while setting up.
4. Using Gmail Email Downloader.
About the 4th point, there are so many tools available, but if you need a suggestion, it is RecoveryTools Gmail Backup Tool - https://www.recoverytools.com/backup/gmail/

Why am I suggesting it?
-It is fast
-Work locally so there is no data breach
-Converts to multiple file formats like PST, OST, and even helps in direct migration
-Can easily transfer in bulk