Sharepoint website, where is the recycle bin?

Hello taichroth_84 , 

Thanks for reaching out. If there is any website deleted and you are getting 404 not found, you can follow the below steps:

1. Go to SharePoint admin center: https://domain-admin.sharepoint.com and then check the tenant level recycle bin. If you see the site there you can restore it from there which is going to take some time to restore however you should be able to access the site within an hour or two. 

2. If the site is not available there, check by adding the tail to the link customizing the site with the affected site to see if the link is redirecting to the site components: 

https://domain.sharepoint.com/SitePages/Forms/ByAuthor.aspx - Site pages 

https://domain.sharepoint.com/_layouts/15/viewlsts.aspx - Site content

If you are able to access the component it could be a possibility that the site page was deleted, thus you will have to create a new page or go to below URL to restore the page if it is in the recycle bin: 

https://domain.sharepoint.com/_layouts/15/AdminRecycleBin.aspx - Recycle bin