Vendors for a business ? Any advice is appreciated

For awhile now I have been trying to get a hold of vendors for a various amount of items. I want to open a business.

Does anyone have recommendations for

Clothing

Lashes

Shoes

Makeup brushes

Designing Makeup pallets

I know a few people that know good vendors but they never provide their information to anyone .. I’m hoping someone here can help. I wonder what I’m doing wrong trying to find good ones!