Amazon affiliate - Where do you place your CTAs on reviews pages?

Hello!

It's been 6 months that I'm doing some tests about CTAs placements, I've seen many threads about "one above the fold" "one at the end of the article" but it seems that it doesn't work for me.

Where do you place your CTAs?

My sidebar was converting well but I've removed it in the hope that the other CTAs will convert better.

I'm writing high quality reviews of around 3 000 words.

Thanks!

Bump... If you have any idea... I'll take it.

I've tested many things:

-Above the fold button
-Conclusion button
-Button in the middle of the article
-Button at the end of my review
-Multiple buttons colours (opposed colours) orange, red
-Differents CTA: Check Price, Check Today's Price, See Price, Check Amazon Reviews
-Multiple merchants on a table

But the result is the same: On my product review pages I have ONE click on an amazon link every 20 visitors.

It hurts. I don't understand why. I rank very well, I write good quality product reviews, I've learned from a lot of courses, they stay around 5 to 30 minutes on my pages... They just don't click.

My "Best X" pages are working very well, but the product review pages are

If you have any advice, I'm ready to try EVERYTHING.

Thanks.