It loads based on your History and what you watched. So what does your link look like for YT? And are those other browser login or just no login and is firefox login or not? That also makes a difference.

An extension named YouTube High Definition has been linked to this problem:

https://old.reddit.com/r/firefox/comments/aesm24/youtube_redirecting_to_a_channel/

You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

• Ctrl+Shift+a (Mac: Command+Shift+a)
• "3-bar" menu button (or Tools menu) > Add-ons
• type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions.

Then cast a critical eye over the list on the right side. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Try removing YouTube High Definition, and anything you do not remember installing or why.

Any improvement (test YouTube in a new tab)?

https://www.youtube.com/channel/UC2t5bjwHdUX4vM2g8TRDq5g/community?lb=UgyylR2T6Np_9T6goUx4AaABCQ

I'm logged in on the other browsers to YT Weird part is that I'm not clicking anything once on the YT home screen, it automatically redirects me

jscher2000 said

An extension named YouTube High Definition has been linked to this problem: https://old.reddit.com/r/firefox/comments/aesm24/youtube_redirecting_to_a_channel/ You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

• Ctrl+Shift+a (Mac: Command+Shift+a)
• "3-bar" menu button (or Tools menu) > Add-ons
• type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions. Then cast a critical eye over the list on the right side. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Try removing YouTube High Definition, and anything you do not remember installing or why. Any improvement (test YouTube in a new tab)?

This was it, thank you!