why cant i download app install?

Are you saying why can you not download and install a more current version of Firefox like the Firefox 133.0.3 Release? From your more system details on right your UserAgent appears to be Mozilla/5.0 (Windows '''NT 6.1'''; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0 The NT 6.1 is Windows 7. Firefox 115 ESR currently at 115.18.0esr and supported till at least 115.21.0esr in March 2025 is the most current you can run on the EOL Windows 7, 8, 8.1 as Firefox 116.0 and later including current release requires Windows 10, 11. https://support.mozilla.org/en-US/kb/firefox-users-windows-7-8-and-81-moving-extended-support