Help, my ex bf is kind of missing. Idk what to do

I just broke up with him 2 days ago. We lived together for a year, been together 2 1/2 years. I checked our cameras and he went to work yesterday, and then i left shortly after to go eat with family. After i left, then he came back and changed clothes, grabbed a bottle put it in his trunk around 3pm yesterday, didnt come home all night which hes never done. So he skipped work, and took a bottle and left and has been missing. And now its about to be 12pm next day and hes still not home. I love him like crazy but broke up with him because he has a bad relationship with alcohol, and peed on the bedroom floor. He was sober for awhile, we had this camping trip planned, he was lovey, weve had a great time, hes not aggressive or anything, literally his only problem is low self worth, and alcoholism. Which ive tried everything to help with but because hes somewhat a functioning alcoholic he cant even admit a problem more than half the time. Hes a great guy just has the alcoholism, so i ended things a few days ago. (I made a post aboutnit here) Since i ended things hes completely ignored me and acted all depressed, stayed in the room, i slept i. My sons room. And has been drinking every night. Thing is, im so over it and done bc of the drinking, especially now. He blocked my phone number, but not my instagram. I know he and his friends sometimes get together on mondays/ tuesday nights, but he always comes back home. Hes not talking to any girl, he hates sleeping around, he has insecurities, ive never seen him act like this, and not come back. He left his watch, his dogs, his clothes. It is his house im living at. Im confused. Part of me doesnt care and feels i should wait for him to get back, another part is very concerned. I still love him. I dont have his friends numbers, only one of his homies girlfriends number but shes on vacay. But i do have his older sisters number who stops by few times a month/ months and knows his condition, so im thinking about messaging her to see if shes heard from him.What should i do? Hes not the type to just be passed out in His car either. I hope hes at a friends house but idk. I wouldnt be typing this if it were normal behavior. Im worried hes spiraling after i suddenly broke up with him. I sent him a video of him pissing blackout bc last time he did it he denied it, so i had proof this time which he asked for. I think hes so embarrassed. But ive been nice and offered to talk but hes been avoiding me. Now idk where he is, i could barely sleep last night. What tf should i do.

Even when mad in the past, hes the type to tell me where hes going if he’ll be gone this long. Somethings definitely off.