I have only been in your situation once, but my friends helped me a lot and, in recent times when I’ve been in similar circumstances (divorce) exercise was the one thing that kept me sane and stable.
I cannot recommend enough finding something you enjoy doing and doing it on a planned regular basis. It gave me a reason to get up early when I had to and not mope in bed and it gave me a reason to leave work and get back for the gym. It _will_ make you feel better.
Friends, real friends, will also help you. They will let you talk, won’t judge you and will help you. We’ll kinda do that too, but we may throw in insults, dark humour and swearing. Possibly also a little bit of judging about the state of your lawn or the choice of gearing on your bike. You know, the important things in life.
I’m not going to lecture you about things but, as much as it may seem like a good idea, drinking will not help you. Go easy on it please, it’s too easy to let it become a crutch.