Please see my 20-Aug-2025 topic Firefox ESR v115.x Support for Win 7 and 8.1 Ends September 2025 for a discussion about the r3dfox browsers, a fork of modern Firefox browsers that runs on Vista SP2 and higher.
Dell Inspiron 15 5584 * 64-bit Win 10 Pro v22H2 build 19045.6216 * Firefox v142.0.0 * Microsoft Defender v4.18.25070.5-1.1.25070.4 * Malwarebytes Premium v5.3.6.205-138.0.5346 * Macrium Reflect Free v8.0.7783