If you are comfortable and happy with WIX that is great. Personally I’m not a fan of those types of website builders (WIX, Squarespace, Weebly, etc.). You are limited to the features they provide and you can’t migrate your website to a different hosting provider if you become dissatisfied with their service or offerings, which means you’d have to start all over again building your website.
You received a few replies to your post Cannot install stacks in RW6 but it doesn’t look like you replied there. If you are still needing help, please let us know. If we need to schedule a one-on-one Zoom session to help troubleshoot and get you up and running, we can do that (something I doubt WIX would offer for their clients). 