go to this website
https://beta.brmm.ovh/mods
download your mod
open it in files
click extract all
click on the file
then click ctrl + c
go to steam on brickrigs and click manage
then properties
once in files
click brickrigs and open the file (NOT THE ONE WITH THE LOGO IT SHOULD JUST BE A FILE)
click mods
then ctrl + v
run brickrigs
Enjoy the mods!