There are two ways to use it on a laptop you can view through normal browser like chrome or install the app which can be left in taskbar.
Overall the app is a smoother experience - on mine anyway, but if there are problems with one way you have the option of the other.
It might be a touchpad driver or customising problem.
A lot of them have a sub-layer of things you can adjust takes a little finding.

BTW facebook is not all bad there are plenty of useful groups about almost any subject you can think of but I initially got involved with local community one which is surprisingly useful and has brought people together to an unexpected degree. Generally very positive but once in a while little spats flare up.
I never used it either until I discovered the group aspect relatively recently.