It's a long time since I used Windows.
Go here and download the ISO. https://www.pureos.net/download/
That's what Etcher needs and will put automagically onto your USB stick.
DO NOT UNPACK IT IN ANY WAY.
Just use Etcher with the ISO.
Adobe Premiere is a Windows program. This is a Linux site and not a Windows one.
The most recommended Linux alternative is Kdenlive.
Debian uses a program called Chromium by default. It is very similar to Chrome. It uses the same Bookmarks and Extensions etc. The advantage it has is that Chrome "phones home" --- it provides information back to Google, whereas Chromium does not.
You can use Chrome if you still want. Is it the...
https://www.psychocats.net/ubuntu/installingsoftware (Ubuntu is based on and like Debian)
"How do I connect it to a private...