When you think the site is still safe enough to use, go to a website like portableapps.com and look for any older version of FireFox/Chrome/Opera, download and run whichever one tickles you to visit that URL again.
If there are no old enough versions available, send me a PM and a location where I can dump an old portable version. Think I still have FF from 2015, Chrome from 2018, IE 6.0 (eolas) from 2006, which is a portable version of IE and if you really need to go old school, I can provide you with a portable version of Phoenix 0.5 from 2003.
The Phoenix browser was renamed to Firefox many moons ago. Still, they are available in my pack-rat software archive, if you need them.