How to search for text in files by skipping an expression?

Question

Notepad++

Hello, tell me please, there is a line

Зашел Ник <STEAM_0:0:111111><IP><11.11.11.11>

I wanted to run a search by nickname and IP skipping <STEAM_0:0:111111>as it is unstable.

There are more than 4 thousand files, manual verification in this situation will be very long

Please tell me, very weakly, or rather, I don’t understand regular expressions in Total Commander, maybe this is possible in notepad, please tell me too