Craving insane dopamine (and possibly loneliness)

Hi Community,

As the title suggests, I feel like I am craving insane amounts of dopamine and looking for some sort of a human connection.

A bit of context, I have never lived by myself for most of my life: My school days were spent in hostel, further during my bacholers days I was always surrounded by my friends and we used to go out almost all days of the week. The first time I ever sort of lived by myself was during my first job, during which I started observing similar kind of feeling (I wasn't diagnosed then) and to subside this feeling I used to smoke weed, it made me calm.

Fast forward to now, I have realised weed is a bad cope up mechanism (don't smoke weed now) but I am going insane and unable to function at my best. I kind of get hyperfixated on my dating app matches, or go insane if my friends don't pick up my call etc.

I am trying to distract myself with things I like such as movies, or finding new novelty, trying to meditate etc. I do weekly therapy as well. But despite all the efforts, I feel like I am going insane and thus reaching out to the community for any help.

Edit: I take Ritalin LA - 30mg, used to take SSRI (Lexapro) and stopped it few days back as I feel very dud when I take those.

Edit 2: Added information about smoking weed: I dont smoke weed now.

Thanks in advance.