You can use something like VRS to view the local data which you might like better.
Or you can use a 3D view: (which isn’t perfect)
dump1090 3D Viewer - #257 by evangelyul
FR24 and other services like planefinder and Flightaware use the data you collect if you feed it to them.
By now most places have pretty good coverage so your feed isn’t necessarily improving what you see there.
But for some people it still does.
The data are much more fine-grained if you like looking at virtual aircraft actually flying circles and curves 
The data are actually much more current.
Without the interpolation FR24 applies you have a delay of around 20 seconds i’d say.
You can get premium memberships from several of the flight tracking sites if you feed them data.
Also it seems your range and reception is rather poor, that might color your perception.
Improving reception is probably one of the only reasons some people pursue the hobby at all.
(A bit like DXing)
Also this glider close to me is not properly displayed with it’s trail by FR24:
(Granted most don’t have ADS-B and so are not visible on my local map)
Also military aircraft and some business aircraft tend to be filtered on FR24. No filter for your local view.