Have a look there. For self reference I took note of the steps:
Since August (when I posted my guide), a few things have changed (a lot of AI assistance - up to you to decide whether to use these apps or not): there are now multiple browser alternatives on openrepos. Also: for Matrix: xmatic. For Youtube: Fin Tube. Work is being done one the camera of the JP2 to get picture quality on par with android devices sporting the same camera: Rawfish / fiat imago. Jolla are working on an up to date stock browser as well. So things are evolving rather fast.