Need some feedback

Hello Warriors! I'm from Europe and seriously need your help. I have a sales funnel that does not convert. Please explain to me where are my mistakes. 1000 clicks costs = $ 400 signup for squeze page from the cold traffic is 20%. About 200 people sign up for my list. Form this list I have about 2% conversion, but in average I have a much more less than that. Just about 4 persons buy my product that costs 39 $ that is $ 156 in earnings. As you might guess I'm loosing a lot of money. When I use Presell page there is a little bit better from 1000 people on the sales letter comes about 500. But conversion is still so small about 10 people buy my product so my eraning is about 390 $. So please if you have any advice any hints please help me. I can not work out what is wrong with squeze page. My product is in the health niche. Sure I have an upsell but it doesn't change so much. System simply doesn't convert.

Sure I do a lot of split tests, but still not a lot of profits as you can see,

Greetings