No such player.
This takes your clips off the front page and makes this profile private. It does not remove anything from YouTube: a clip that is already published stays published, and anybody with the link can still watch it. Taking a video down is something you do on YouTube itself.
KillBeat has no email address for you and does not want one. Add the bot on Steam and a published clip is sent there as a link. Nothing else is, ever. Being friends is the switch: there is nothing here to turn off, and removing the friend on Steam stops it.
Off unless you turn it on, and it covers matches read from then on rather than any already on file. With this on, KillBeat looks for your new matches a few minutes after you leave one instead of waiting until you next open this site — it can see that you stopped playing because you added the bot on Steam, and it looks at nobody else's games. Then one line and a link to that match's page here, at most once per match, whether or not the match had anything worth filming in it. The line carries no round, no kill count and no score, because the page has all of it and a chat message is for ever. Two ways to stop it: untick this, or remove the friend on Steam.
Clips
Your Steam match history
Linking stores your game authentication code on this server, along with the last match code the walk reached. The code is what lets KillBeat ask Steam for the next match in your history, and it is used for nothing else: it is never shown back to you or to anyone, nothing here reaches out to any other player's history, and unlinking deletes it and keeps the matches already found. No email address is asked for or kept, here or anywhere else.
The authentication code comes from Steam's own Game Authentication Codes page; create one there. The match code comes from CS2 itself: Watch → Your Matches, then copy the share link of any match you played; paste the whole thing, the code is picked out of it. KillBeat walks forward from that match, so pick an older one if you want a few back.
Linked, walked as far as .
Steam refused your authentication code the last time it was used. These expire; create a fresh one and link again.
The matches KillBeat has found for you, newest first. What came out of each one is on your moments.