People seem to know what my rank is during a competitive match, which is a bit annoying when toxic people have this information.

I know there is this tracking websites like tracker.gg , but to my understanding it doesn't show a players profile if he didn't create an account there. My Username also has some special characters which should make it difficult to just enter my username on these websites.

Is there some way people are tracking their matches live, while they are happening and are thus able to see everyones ranks?