That is a different problem. You seem to be experiencing the following distinct problems:

-- you idealize one specific woman despite the fact that you do not know her well

-- you have a very narrow range of what is attractive to you physically

-- you have a hard time dealing with being rejected

-- you live in an area where there is a deficit of single women

Since those are all distinct and largely unrelated problems, perhaps it makes sense to handle them one by one - pick one that seems easiest to solve and work towards a solution. Say, spend time in a larger city if you have one nearby to be exposed to more single women.