I need marketing expert to find a potential buyer for the database

I need advertising expert to find a potential buyer for the database. It is a list of all 290,000 companies in Serbia and for each company: COMPANY NAME, ADDRESS, COMPANY OWNER, OWNER'S PERSONAL PHONE NUMBER, COMPANY REGISTRATION NUMBER, PIB, BUSINESS CODE, BUSINESS CATEGORY. I am sending a small sample in the attachment so that the potential buyers can check what it is about, and if they want I can send a larger sample so that they can have a better insight into the data, and to better check the data, establish their validity and quality and to see if they are satisfied with the content. They can potentially monetize the data in the following way: if we analyze the similar websites in other countries, we can see that those sites has a lot of visitors per month, which means that users are very interested in that type of content, because they are looking for potential companies in their near and far surroundings, whose services they want to use. There are about 290k registered companies in Serbia, and the potential earnings would be from sorting and presenting companies on the first position in the search. If we assume that 1% of companies would be interested in paid sorting, that's about 3k companies and if we charge them 100 usd per month for the advertising service, we would have a profit of 300k usd per month with a good marketing campaign and setup. On the other hand, in addition to the mentioned, they can offer their products and services to these companies or possibly cooperate with them and thus eventually profit that way too, so you need to find potential buyers from this type of category. The price for the complete database is 100 000 usd, and your share is 30% of the eventual sale.