Need advice on platform to choose for a one pager

Hi lads, I have one page of text + images nicely structured around a new offer my company will soon propose. The offer is completely different to what the company usually does (we do hardware, products, and we will this time offer a kind of consultancy service) - we are a really small outfit. As marketing manager I feel like there's an opportunity to create a completely separated one pager website with specific domain name related to that offer that would get me a reasonable SEO reach that could be difficult to attain on the "main" website. the one pager will host several CTAs and link to the main website at the bottom + in the copy for added credibility. Now looking for your advice on which platform i should use that will help me get a good SEO - I've seen onepager layouts at squarespace, canva, webflow... that I probably could do myself. Considering my budget is very limited, what would you guys recommend ? Could I go the canva way without hurting my ability to have a good SEO ? (I've seen on Canva that I can NOT put my Google Analytics ID, which sucks.... but the interface is sleek and very WISIWYG) Thanks :)