It isn’t just you that has a hard time with keeping track of your matches across multiple dating apps.
It is going to be easier for you if you start with a number that you can handle.
Start conversations with no more than a handful of matches to begin with across all the dating apps that you are using. See if you are able to manage that.
If you can, in time, you can increase the number. If you can’t, you should decrease the number.
If you take on too much, you could find yourself conducting conversations with multiple matches only to end up with no date, simply because you weren’t paying enough attention to each individual.
Focus on quality over quantity to start with. Once you get a good read on how many matches you are able to keep good track of and manage, you will have a better idea of how many you can truly handle.