Is a Rabbi the very same as a priest? And can people who converted to Judaism become Rabbis? [I Like Jewish People]

They are similar to a priest. But you don't confess sins to them. Yes, a person who converted to Judaism can become a Rabbi if they wanted to.

According to the Jewish Babylonian Talmud, no rabbi will go to hell because their good deeds outweigh their bad deeds, regardless of how bad they were. So, if you want to stay out of hell become a rabbi.

You mean a Catholic priest?

rabbi simply means teacher