@kropot

Please sanitize your YouTube links! Recently YouTube's links got 2 times longer. They added Source Identifier in them for the sole purpose of collecting data. You can delete it, and link will still work just fine.

In the simple link, actual link to video is before question mark, question mark and everything after that is source identifier

In the other case, there is also time code after identifier, so you can remove source identifier, everything after question mark but before and symbol, excluding question mark but including and symbol.

Why you should delete that?
1. You post that link on social media, Google crawler finds it, checks the data base and now it knows this account on other social media belongs to you.
2. I click on your link and now Google knows our accounts are connected.