ah..I needed to write firefox-esr
It is this easy get version 102 (right now)
So in terminal:
sudo apt-get install firefox-esr
And you get it..remember it doesn't made for Maemo UI, so you can think is as backup brownser, if any another browser doesn't open page.

Btw..it shows to net like this:
Mozilla/5.0 (X11; Linux armv7l; rv:102.0) Gecko/20100101 Firefox/102.0
So everybody can think should there change word mobile somewhere, to get more lightweight page from server.