They look similar and they are built for opposite jobs.
It has to work for a customer, a job applicant, a journalist and an existing client. That breadth is exactly what stops it converting one specific visitor.
It assumes it knows why you arrived, because the ad or email that sent you said so, and it answers only that.
Every other link is a way to leave without acting. A homepage needs its navigation; a landing page is normally better without it.
Not visits, not time on page - the share of arrivals who do the thing. That makes it testable in a way a homepage never is.
In rough order of how much difference each one makes.
If the ad says "free migration" the page must say "free migration" in the first line. A mismatch here wastes more budget than any design decision.
Pick the single thing you want and ask for it at the top, in the middle and at the end. Two competing actions reliably convert worse than one.
A review, a client name or a number, placed next to the button rather than in a carousel further down the page.
Every field on the form costs you submissions. Name and email will do; you can ask the rest after they are a lead rather than before.
Paid traffic is mostly mobile and on a phone network. A page that takes four seconds has lost a chunk of the clicks you already paid for.
Building one, hosting one, and what it costs.