How to explain to a person about your level of English?

Question

English learning tools

when they ask about your level of English, what is the correct answer to this question (let’s say this happens at an interview), like that I passed the test and they wrote me pre intermediate, then this is not an answer, how to assess your level in order to understand yourself about it, and explain to others .

Answer 1

How to explain to a person about your level of English?

Not sure it's going to happen. You don't speak Russian either.
There are formal test systems, for example, TOEFL/IELTS
This will be quite formal and quite accurate.
If you need to explain in a simple way, then explain what exactly you can and what not.
"I read technical tests with a dictionary. I don't speak orally. I can't write correctly"

Answer 2

tell me honestly that you don’t know it, or at most you can read the documentation or simple instructions
, those who know, at least conversational, just switch to English, and the level is immediately clear