I think Bishop hit the nail on the head. The Friday Saturday thing would be a HUGE issue. I have a great respect your commitment to your faith, but realistically, playing ball for a school other than one that shares in that practice I'd say is a very small chance. like...I hate to say it ...but, being realistic, its pretty much not going to happen. Not trying to be rude. just trying to make sure that you are heading down the right path. You can work your tail off to prepare physically, and you might get some good offers from good schools. But i cant imagine those offers will hang around after you break that news to your potential coach unless they have been in a situation like this before. If you have really exceptional talent, theres a slim chance you might find a school who is willing to work with you to schedule makeup practices or something. Even if a coach did take you knowing this, it would probably really effect your playing time. Coaches want someone who is committed to the team. lets say your team plays or practices every day but sunday. that means you will miss 1/3 (2 of 6 days per week) of the time participating with your team. This would have a huge effect on the amount of playing time you might get, as well as your growth as a player. If you did get a lot of playing time while missing all this time, other teammates would surely grow resentful and it would start to effect the team culture, which can get ugly. These are all the types of things a coach would have to think about before getting involved with a student in this situation.
I don't know much about the Jewish faith, so please forgive me if i sound ignorant here. But, i might suggest speaking with your parents and maybe your Rabbi about your aspirations to play ball and whether or not you might consider making a bit of a lifestyle change/religious compromise to accommodate these days of the week in order to work towards this goal. I'm sure that these people could serve as a great source of guidance in your life.
Otherwise, Like Bishop said. Start looking into Jewish schools that work and schedule games under this practice and see if you can find a good fit. people at your synagog might be able to point you in a good direction and help guide your decisions. Chances are the team atmosphere and everything would be really comfortable at a school like that as well.
I am a HS coach and one of our opponents is a private christian school. Regardless of their level of success (which has actually been great as of late) those kids seem to really carry themselves well on and off the field and have a strong, like minded, team culture and sense of school spirit. They are all going to school there because they share a common faith in their lives. This translates well into a team setting. us public school coaches work really hard to nurture this type of camaraderie and these kids almost seem to have it built in (to a degree)...A Huge advantage. they even pray around home base after their games and invite anyone from the other team to join. Whenever someone gets hurt (opponent or teammate) they all take a knee and pray also.
Sorry for the "tough love" but I'm only saying these things with the intention of helping, not trying to cut you down or discourage you. Its important that you choose a realistic, attainable goal to strive for. Sounds like you have some big life decisions coming up. I wish you the best of luck! We are here to help!
-CoachZ