What cms and plugins (modules) are suitable for such a task to create a landing page, referral = landing subdomain, funnel?

Question

Referral programs

Hello.
There is a task to assemble a website for free or at minimal cost from a ready-made engine (cms) and modules.
1) Each referral (partner) has its own login. Login=subdomain. That is, his landing page will be, for example, on partner1.site.com, respectively, for the second partner referal2.site.com
2) Each in his personal account displays projects where he enters his referral links to other sites (partnerships).
For example 3 investment projects with their personal ref links. That is, if a partner brings his traffic to his landing page, and a new ref is registered, then the new referral will automatically see links to the projects of what he has brought.
For example, referal1 brings a visitor to referal1.site.com. The visitor, having registered by entering the login, immediately receives his sub.domain. He enters his account (personal account) and sees that the person who attracted him recommends registering in other projects using such links
site2.com/ref123123 site3.com/ref192919 and so on.
3) sales funnel after the landing page (that is, on the landing page, the visitor enters an email, and immediately redirects to the second landing page, where he is asked to enter, for example, other contact information).
Is there such a ready-made? that is, a referral program - a website catalog of investment projects with their own referral links.