Problem in add routing for my api

the problem in add routing for my API
I configured workers with my server so all things are working well
I have only one confusing issue
when I add routing in the Cloudflare dashboard my API URL it’s stopped my mobile app API because it’s the same API, a question how can I resolve it?

my current API from backend: api.mydomain.com also it’s the same URL that I add in the Cloudflare route setting to handle requests