where is my safari download

Safari is part of the version of OS installed on the computer. Normally, Apple does not offer a standalone installer of Safari.

If one whats a newer version of Safari, one must upGrade the version of macOS installed on the computer.

If that is what one is looking for, Newer version of Safari >>>

The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.

With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install.  For Best results use Safari to commence the download as Others may not work.

Make Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS

Notation - Mojave is the Last version to support 32 bit applications / extensions and Drivers. Catalina & Big Sur supports only 64 bit and there is no workaround.

Suggest using Go64 to find 32 bit application before attempting the upGrade. Some or many of the Application already installed may required update or upGrades to 64 Bit Versions.

Are there any AntiVirus, Disk Cleaner, Optimizers, Un-installers, etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation

Your question makes no sense. Are you asking where you can go to download Safari? If so, you should know that Safari is installed as part of the Mac's operating system and cannot normally be individually installed. To upgrade Safari, you will need to upgrade your operating system, if that is possible to be upgraded to a newer version.

Any file that you download to your Mac from a website using Safari is placed in your /Users/yourname/Downloads folder by default.

Do you mean you downloaded something in Safari & can't find it?