I want to open a dropshipping store on ebay or amazon because there is no way i can afford a site right now but they require to have your details and everything on the package you send to the buyer and in order to do so, you have to contact the seller, this is kinda troublesome since you don't even know if they want to do that in the first place, my question is: are there platforms with wholesalers where you can do this automatically on the platform without having to contact the seller directly?
If I understand your situation correctly my initial advice is to start a blog site and market from there. You can get a free blog site at blogger or wordpress - both are . coms. If you do go that way I recommend you migrate to a self-hosted site as soon as feasibly possible. You also might want to do a search on this forum for the thread about "my dropshipping journey". I don't know the URL off the top of my head but it's a long thread and you probably can get some good info there. You might even start a conversation with the originator of that thread and get some advice from that person.
I would recomend creating your own website and establishing yourself as a brand. This is better in the long run and opens tons of new opportunities.
AliExpress is where you can get dropship suppliers for free. And you don't need to contact them. All you do is just sell their product on your store.
Aliexpress is free. Create a website, list the products on the site and then you're pretty much good to go.