How can I separate my hotmail alias from my main hotmail account?

I had my main hotmail account for over 15 years now. I wanted to create a second hotmail account to manage incoming emails from my neighborhood and keep them separated from my personal emails. I thought the alias was the way to go, but hotmail ended renaming my username to my new neighborhhod alias, and my old hotmail account is the alias now. I had very strict junk mail settings for my old hotmail but now they don't apply so I keep getting all the ****, f***book and similars in my inbox, while the important stuff gets send to the junkmail! It's a BIG mess! I just want to keep both accounts but independent from each other. I don't want to delete either one, just need to have separate inboxes with their own junkmail and privacy settings. How can I do this without messing up??? Please help!