Changing of Address on www.ads-software.com , posts not found

Hi Guys,

I use www.ads-software.com and do not have the wordpress plugin – html is not a process I am familiar with.

I decided to change my URL from https://vaccarisays.wordpress.com to https://filmphilosophy.wordpress.com.

There were two things I could have done, but am afraid to for fear of losing my posts. The 1st is reversing the name change and getting back to my original (vaccarisays) but I have no idea how to now.

When I click on that site now (which I’m still admin of) it says nothing found. For the new site I have created (filmphilosophy), everything looks fine but when I click on posts on the homepage, there is again nothing found, and I am panicked.

However, if I click on archives and a specific month, my posts are still there. Can anyone please instruct me on how to transfer/move all the posts from my original site to this new one?

Thank you so much (panicked).

Sophia.