reminded me of something i had, i was afraid to be alone too. at this time when i would leave my residence i would also have illusory distortions of outside (derealized) and that was unpleasant too.
what i tried personally - i live near a hiking trail within a 5 min drive so id drive over and hike for like 1hr several times a week.
the main thing when i was scared to be alone i was having morbid thoughts about reality testing and whether communication with people was possible beyond a certain point.
what really helped me is simply reality testing w ppl on steam and discord, like literally just we agree the same thing exists, someone just posted a vid, we both watched it, we both agree that new vg was released etc.
i tried to find the weirdest people i can my type of weird people and basically just started posting more and looking at more profiles daily.
good luck w this if you are in it some of these rough cycles in dpdr can be pretty painful.