Which CMS should I migrate my online store to?

Question

1C

There is a ready-made store that has been working on the current system for almost 5 years. (applepack.ru)
The site is made on the unpopular CMS, and all its main modules are self-written. Outdated technologies, bad, difficult to maintain code and a lot of problems - all this prompted the port.
There is the following:
- Product data is uploaded daily from 1C
- Mobile version and desktop version are, in fact, two different sites from under one CMS
- About 17k products and more than 100k orders
- It is planned to redesign the desktop version with the introduction of its features
- About 4k uniques daily
Actually, the requirements for the new CMS are as follows:
- Ability to connect 1s without severe pain
- Great opportunities for customizing both front-end and back-end
- Presence of a built-in CRM with a minimum set of functions (so as not to lose orders if the main CRM falls down or something happens to it)
- Ability to save old URLs and metadata
- Ability to to separate the desktop version of the site and the mobile
one - Popularity, so that you can find information anywhere, ask a question, and also easily integrate with various external services, such as call tracking, SMS sending, etc.
- The ability to quickly work with 20k products without brakes
Now we are considering Bitrix as one of the options. Accordingly, two questions arise:
1) Does Bitrix meet the above requirements?
2) What other CMS can be considered taking into account the above requirements?
Upd:
Thank you all, all options have been reviewed. I personally discovered many new cms for myself :) We settled on shop-script

Answer 1

Take a closer look at cms readyscript
There is an internal CRM
Integration with 1s
Yes, and for the rest of the items it fits.
+ own forum and documentation. Lots of information can be found there.
I lifted IM on it with 45ts of goods, it was comfortable to work

Answer 2

1С-Bitrix

Answer 3

In addition to irishmann , CMS Netcat is also a component-infoblock system, unlike Bitrix "cleaner", like everyone else, with its own jokes, but in general, a good competitor to Bitrix.

Answer 4

wordpress!)

Answer 5

Liferay + Internet Commerce
And you can no longer bother with the platform with further growth.

Answer 6

You can look cscart

Answer 7

modx revo. This is a free CMF - framework, with almost no redundancy and architectural restrictions, with a simple and convenient admin panel.
The fourth most popular in Russia https://cmsmagazine.ru/catalogue/ , but not as full of holes as wordpress and joomla
in the vulnerability rating.
On it , we create both simple and complex online stores and personal accounts.

Answer 8

Look for someone who will continue to support it, and then ask them to make a test example of performing operations.