LHM currently supports these games:
Default HUDs, as well as Premium and/or Ultra HUDs (depending on your LHM Plan) are already available in your account - they are ready to use the very second you log in to your account.
To upload a HUD manually you need to download the appropriate zip file and simply drag’n’drop the HUD to “HUDs” tab or use “Add new HUD” button”.
Here are download links for every default HUD:
CS2 HUD: https://www.lhm.gg/download?target=cs2
Dota 2 HUD: https://www.lhm.gg/download?target=dota2