BUILD A WEBSITE ON WORDPRESS.COM

I want to customise and build a website on [login to view URL] (so that I will manage it myself). I want to use our own photos and link to an existing blog. The website will be for a law firm. Content is ready. Designing has to be collaborative through zoom calls etc. Need someone who can customise through CSS editing etc. as needed on [login to view URL] (as opposed to Wordpress plugin)