Supplier advice/help

Hello everyone, I’ve just started with dropshipping, meaning I’ve discovered the business and I’m studying to launch my first store. I would like some general advice on how to find a supplier ‘cause I saw there are a lot of options out there but whenever I try to find one for the product I want to sell there’s always a problem: the supplier doesn’t sell the product, the price is too high, the shipping time is too long, etc…. Which supplier/kind of supllier do you recommend for a beginner?