Ask HN: How to convert high traffic to money?

I have a webpage running for 15 years. Currently it hosts only an image and it's very popular in Turkey and it's becoming very popular in EU as well. Each month I am getting millions of hits from unique visitors.

When I have time I build some apps on it which were also successful but I couldn't pay the server/service costs because of high traffic.

Adsense is already blocked, and most of the affiliates or ad-marketing companies haven't even responded because of the low quality content.

How can I convert my high traffic without proper content to legal money?