Generally there is no way to not play with bots in COD: Mobile but you can lower how many of them there is in your games.

Rank Up to Legendary

You may have noticed it yourself too but up until Legendary rank, most of enemies you face are bots.
One of the ways it lowers number of bots by big number is ranking up to Legendary.

• Playing Legendary is not easy, so enjoy lower levels until that point. 🙂