Did you ever means the show was in the past, in a time period that is closed. The ever is not grammatically neccesary and is an emphatic for at any point in your life, probably in the past and not something you would be watching currently. Did you ever see the first season of the Bachelor? Did you ever see the original Rent cast? Did you ever see the show Dallas? You can use either version for a show that is current, but it would not make sense to say did you for a show that is still ongoing. Have you ever seen the Bachelor? (old or current seasons)

wants to attain - to attain is an infinitive. Eight or more sounds strange. I would say "over eight"

There was not much he feared, even obstacles.

US English here. Aisle is a specific word that means the space between defined seating in public spaces with many seats, like an airplane or train or theater or church, or in a classroom. It applies to a place like a government building, so working with political opponents is called "reaching across the aisle." The space connecting classrooms is called a hallway. All of these spaces in your house would be a hallway, not an aisle. Corridor is a rarer word that I wouldn't use much. Corridors can be outside, like paths to something outside or between buildings. A bride might go through the (outdoor) corridor from the other building, into the hallway to the sanctuary, and then walk down the aisle.

I would never use any expression of "not I" unless you want to sound like you are in Bridgerton. Even in writing, the correct modern version is not me.

In the US, we have a few Yiddish slang words that are understood, like this one. A character using this word would be a marker of being stereotypically Jewish or of being a NYC-area character.