How can I fix the issue of all collections showing the same page?

Hi,

I’m currently editing my website and as I was working all the Collections changed and now they only show one page even though on the backend everything seems to be correct.

All the collections show the same page but pages itselft are working correctly. Not sure if it may be that I edited the Default Collection template by mistake. I’m not really sure, but every collection is set as that and I’ve tried creating a new theme template and it doesn’t work. How do I change it back to how it was or how can I change it so it show the collections?

I don’t know what to do.