UpDate My WrodPress WebSite "Beau-frerealouer.com"

Hi We are a renovation company in Quebec, Canada (french) and we offert deferents services to home owners.
We need to:

Create more uniformity along the pages
Increase general performance
Make it more adaptive
E commerce intégration
Amelia app (online Booking) integration

You can see it at:
beau-frerealouer.com