Also work on securing your god damn phone most of all.
Your desktop is nothing to the, compared to your phone.
If on android get rid of google apps, that soykaf is a cancer, install MicroG if you need to compatibility layer, run AFWall to block out all non FOSS apps until you need them. Use FOSS apps as much as you can.
Keep location and the radios off if you are not using them.
Use a completely FOSS ROM too, MicroG works best with them, encrypt it and thats that.
For internet at work I use a wifi repeater at my window. no cell data during the day.