Making a simple company website template on wordpress

Good afternoon, I have a company website on Wordpress: https://bimfurniture.com/

I would like to refresh the template a bit, to make the site look more modern, be as responsive as possible and simpler to use, although in general the design (colors, graphics) and the current structure can serve as inspiration - the current structure can be roughly maintained. I would like you to take care of making the design (we can discuss the details during development) and implementing it. The template should retain all the existing functionality, ie:

allow easy editing and adding new categories

ability to add product pages in categories (presentation only, it will not be an online store)

easy change of banners on the home page

contact form

possibility to sign up for a newsletter

the site must be multilingual, with the ability to add new languages (I assume that it is enough here to install some plug-in, of course, adding content and translation is already on my side)

Best regards, Wojciech Mazurkiewicz