@Mostafa Khalifa something to think about - if I brought you a deal at 50% below the market value, would you be interested in buyng it?
Of course you would!
So, if you get an actual deal under contract, why are you worried about finding a buyer?
Put it on Facebook Marketplace, here on BP Classifieds, whatever other social media platforms you're on, etc.
Worse-case, put it on the MLS (a problem if you are NOT an agent, but then find one to work with!).
Every wholesale trainer tells their newbies to go build a buyers list because:
1) They also tell you to hit up this list for potential listings
2) You need someone to market marginal deals to & hope someone's desperate/ignorant enough to buy them
Know this, at least 80% of the offerings from wholesalers are NOT deals an investor should buy. Many, are stacked two or three deep with various newbie wholesalers all trying to get a piece of the action.
Find ACTUAL deals, advertise them properly and the buyers will find you!