Post urls are being redirected to error 404

Hello I am having trouble with my site ever since I edited the routes.yaml file to create a custom homepage all urls have been messed up and my collection isn’t even appearing in it’s page
P.S the index.hbs file is the same as default except without the header stuff like description, logo ect.
post: page.home`
template: page

         tag: /{slug}/

none of my posts load properly need help please

​here is my site domain
PPS here is an example post

Were you able to find the solution to this? I am having this issue. All of my updated links are directed to the preview link. It will not even show up if I use the post URL. is the domain is broken