Wow. You could have just posted a normal post
Look, having your own place is a good thing on many levels.
But lacking one has hardly ever stopped a determined 18 y.o. to get going, and have some fun.
A few guys in your age group have their own living arrangements, and may be happy to host.
Check on the clubs in the area. Not all places are seedy and dirty.
Stick with the reasonable expectation of privacy, enjoy your private, intimate life, and let your family mind their business.