There is no requirement for a player to have previous football experience in order to play in the NFL. However, the chances of someone making a team without going through a college program are extremely slim. Without college playing time there is no chance for a scout to see you or your talents, and since no NFL teams have open tryouts anymore...
Additionally, without previous playing experience your lack of experience would create a tremendous disadvantage, regardless of how gifted an athlete a person was.
YES
No
Maybe. Go talk to the coach and if he thinks you are good he may put you on the team. Remember they want to win so they usually use high school football players that they have watched play.
No
Applying to UCLA football will first require significant high school football experience. Generally speaking, one must be recruited to the team as a senior from high school by college football scouts attending games.
Its called a walk-on. It means they didnt get recruited for an athletic scholarship, instead they went to the teams open tryouts, mini camp or combine.
No experience is needed to go to OVW's school. In fact since they teach the "WWE" style of wrestling and not the Independent style, not having any experience might be better for your chances there.
If you've never had a job and the application actually asks for "previous jobs" that you've held then you have to leave it blank. If it asks for "previous experience" you can try to demonstrate how your previous experience (whether volunteer, school, extracurriculars, or for your family etc) prepares you for the job that they are offering.
Yes you should have to play high school and college.
If you go to a vocational school, then that might help. *A college would pick you over someone who went to a normal high school without any experience.
being the schools photographer is also a good experience for you, and when you get more experience, someone will call you back if you have the right experience
A decent chance the football coaches will consider you. It'll depend upon your overall athletic ability, how fast you pick up the game and how much work you are willing to put in. You'll have a better chance at a smaller school, than a big Division-1A FBS school to actually play for the team. The more popular the football team, the more likely they'll have recruits with years of experience already in mind.