Everyone here will tell you to steer away from templates!
They are useful and save time, but are limiting unless you have the skills to modify them so much that you may as well have made them yourself.
There are many ways to hire a designer or freelancer. Either post here in the section for hiring people or contact the Author of a template you like and inquire if they accept commissions would be nice starting points.
Thanks! Since I already have a live website, I’m mainly looking to redesign the existing icons and banners first. So what sound me right is hiring a designer for custom assets at the moment, as it might be the better long-term investment.