Overwatch VS CS:GO VS Valorant?

Out of these 3 I've only played CS:GO so I obviously gotta go with that but I question whether Valorant or Overwatch are even worth buying. They don't seem as appealing to me as CS:GO and perhaps its due to the realism CS:GO is known for, not sure why but I've just never been interested enough in either Valorant or Overwatch to get either of them.