How to promote an old browser-based game nowadays?

Hi guys 👋

I have an old browser-based game. Some characteristics: russian language, launched in 2010, football (soccer) manager online.

I tried to revive it and tried targeting ads in FB but almost no result :/ CPA (registration) is $5, LTV is almost the same...

I was targeting 25-45 years men from russian-speaking countries.

What other adv channels shall I consider in my case?