Best buy box, ads and new account

Good evening All!

I created an account a while ago on the German market and I have to admit that launching a new product on Amazon seems to be way harder than on other marketplaces. What are my main concerns:

1. I have no traffic on the listings. Of course listings can be improved, but am I doing anything wrong? ASINs: B0BY5S9SV7, B0BY3GFB5P Any ideas?

2. The answer for this question could be partially the fact that the price does not display on the search page + on my listing. Correct me if my wrong, it’s because I do not have the Buy Box?

3. Is it possible to use ads without a buy box? That’s one of my ideas to increase the traffic

4. If I am not eligible for buy box and cannot begin with ads do I have to wait those 90 days? Note that I am the producer and I use FBM.

I would appreciate any help, as I already spent many hours trying to figure it out myself, but it’s getting more frustrating.

Thanks!
Tomasz