Website on WP - is it worth changing the CMS?

Question

CMS

Good afternoon!
Dano - site on WP
Theme of the site - food delivery
Volume - 7 pages, about 350 products

Pros:
1. The site is 1.5 years old. It is SEO-optimized and is in the TOP-5 for medium and low-frequency queries.
Although the main traffic comes from direct requests (that is, they are looking for us), and only 5-10% for keywords
2. Works. The average attendance per day is 20-30 people.

Cons:
1. Old and "non-selling" design
2. Online checkout is solved using a third-party plugin. That is, to view the menu and place an order, you need to click on the button, and the user actually gets into a third-party application (implementation through a short code).
We tried to implement it on woocommerce, but the whole showcase floats, the products are displayed terribly. Maybe it's in the template, I can't say for sure. Ocean WP template
3. It takes a long time to load - the mobile version scored only 15% on Page Insights
4. The sate.spb.ru format domain - due to two dots in the domain, Google considers it a subdomain and promotes it poorly. Everything is ok with Yandex, we are friends :)

Initially, it was made as a business card site, then it took a couple of pages to be added, then an online order, now we also want to add online payment. In general, a classic of the genre :)

What do you recommend? Reanimate the old site, if possible, and it will be useful (read - it will remove the minuses that exist today)? Or find another CMS that is better suited for our tasks and make a new site?

Answer 1

The CMS may or may not be changed.
It is enough to make a new layout and create a theme based on it.

Old and "non-selling" design

UX / UI design, responsive layout, theme creation

Online checkout is handled by a third party plugin. That is, to view the menu and place an order, you need to click on the button, and the user actually gets into a third-party application (implementation through a short code).

The less body movements the client makes, the better. Everything should be as simple as possible.

We tried to implement it on woocommerce, but the whole showcase floats, the products are displayed terribly. Maybe it's in the template, I can't say for sure. Ocean WP Template

Neither VP nor VC have nothing to do with it. It's a matter of layout.

It takes a long time to load - on Page Insights, the mobile version scored only 15%

Competent layout, creation of a theme, possible refusal of visas. editors + site optimization (caching, cdn, minification of scripts and styles, image optimization) will help solve issues.

Domain format sate.spb.ru - because of the two dots in the domain, Google considers it a subdomain and does not promote it well.

This question is for SEO developers. But as for me, the search engine, the main thing is that there is high-quality content, to register metadata, to make micro-markup, this. core and thematic articles + SSL certificate.
Also take a look at AMP & Turbo. They both support stores (like Woocommerce). Google and Yandex like it

Answer 2

Make a new one. Search traffic is very low. Catch up quickly. Or maybe you won't lose anything.
It's faster and cheaper than raking the existing hell.