Unable to upload files in safari since last few months. Why you peoples are wasting time on other things? Safari is irritating me.

Perhaps your macOS needs upgrade to later version ~ there, Safari

would be upgraded to newer version, too. These upgrade together.

• How to get old versions of macOS - Apple Support

https://support.apple.com/en-us/HT211683

Your mac may or not be suited for latest macOS, yet newer one may

be available to upgrade and there, newer system resources exist.

Third-party browsers are available, should you need to

keep using software no longer upgraded, in macOS.

(Firefox, Brave, and other good browsers can work well.)

• Safari troubleshooting on Mac - Apple Support

https://support.apple.com/guide/safari/troubleshooting-sfri11861/mac

"Make sure cables are connected; that your network devices (such as a router)

are turned on. Check your internet connection. Try working in another app that

uses the internet, such as Mail, to see if your Mac is connected to the internet."

• Update or reinstall Safari for your computer - Apple Support

https://support.apple.com/en-us/HT204416

• If Safari doesn't open a webpage or isn't working as expected - Apple Support

https://support.apple.com/en-us/HT204098

Resolve other issues:

• If Safari appears to be stuck on an unexpected homepage
• If Safari can't open the page because too many redirects occurred
• If you want to block pop-up ads and windows

• Safari - Official Apple Support

https://support.apple.com/safari

https://duckduckgo.com/?t=ffab&q=troubleshoot+safari+browser+mac&ia=web

Seems like that could be matter to troubleshoot.

Or try complaints @ Apple's Feedback pages:

• Feedback - Apple.com Website - Apple

https://www.apple.com/contact/feedback/

Read through, by topic, to see best suited section for providing

limited feedback on site. ~The Product category is best for most

and can cover several topics of specific interest.

• Product Feedback - Apple

https://www.apple.com/feedback/