@TheodoraPetkova - there is a problem with the location of your page. https://teodora.solid.community/Myfirstwebpage/. Pages (other than index.html) that are directly under your teodora.solid.community folder are private - they can never be seen by anyone but you. To make pages that you want the public to see, put them in your public folder i.e. teodora.solid.community/public/Myfirstwebpage/. If you want to keep pages private while you are developing, change their access settings, then change them back when you are ready. (there’s a good post on this forum on how to do that).
I do not at all recommend the use of multiple PODs, rather use multiple pages and/or folders in a single POD.