Which platform is the best to promote an affiliate in CIS region?

I am interested in promoting an affiliate website in CIS region, so which platform is the best: FB, Instagram or another one?

For any area of marketing, including affiliate and betting affiliate marketing, Instagram is currently the best platform for promotion. Visual content + quite good visibility enable excellent product promotion.

Facebook, I guess
More users and better coverage

What about В Контакте?

I would choose Instagram. It is the most popular platform in the CIS, especially among the under-35 category.
Despite all the bugs, endlessly changing algorithms, the cancellation of likes, Instagram has something stable - the ability to earn. Since this social network has a huge audience, it is considered one of the best platforms for promoting goods and services.
I don't know if it makes sense to look for something better than Instagram. Especially since the necessary information on the Internet a lot.
Of course you can try another Vkontakte platform. But it is no longer as popular as it was 7 years ago.