How to choose wordpress theme?

[moved from programming sub-forum]

hey,

I want to start a local shop. Have everything set up except web part.
My idea is to make a homepage where I would have a video/call to action element in the middle below header.


Below that you would see 3 products (element in which I can add or remove more products), which contain photo, price, attributes and call to action each. Maybe you can expand them to read more about a product. You can

buy them via preferred payment option without registration without many steps.
Below some meat for SEO.
At the bottom You would see credentials, map, and social things in a footer.
In this website should be a place for articles like blog or something similar (it can be reached from footer or from header if it is necessary).


I have two problems:

I don't know what theme to choose from that I could build my requirements easily or someone would do them easily and that theme would be fast enough for Google speed insights test and just for people, I mean not server side issues of course.

What you think?
Maybe you can recommend something how should I continue from this point? A theme? A WP builder, framework (that is how you name it)?

I chose a theme WITH a developer. Now he works on it with my requirements. So the key is to ask some help from developer.

At first I thought that I will try to work with frameworks like Enfold or X in Themeforest but it seems that sometimes it is easier to go with other more simplier themes. And a license is cheaper.

You can choose wordpress theme from wordpress site and also download from free online theme development sites.

I did not ask where to find WP themes : ) It is obvious.

I'm asking how you choose a theme from so many options?