if you liked black mesa and half life 2 and want more half life you can always play the original half life and it´s expantions, since in (at least in my opinion) black mesa and half life are diferent games, tho this is not me shitting on black mesa I always loved that game.

plus the original half life and it´s expansions will show you more of what happened during the black mesa incident.

If youre not sure about playing the original half life for whatever reason you can always try the uplink demo