How to leave a man alone

So it’s been a month since I broke up with my bf. We’ve been together for a long 5 years.

I know I deserve better... but I’m still feeling so sad. One minute I’m okay & the next minute I’m balling my eyes out... it’s usually after I hang out with a friend & go home I miss him the most idk why.... we have a daughter together & it just became too toxic so I don’t even really wanna be with him just don’t have any family and like 1 friend & idk 😕... we text almost everyday but it makes it worse so I decided to cut the contact off unless it’s about our daughter... what are some things I can do to feel better? Like I said I go out and when I come home I feel worse it’s like I rather be alone idk 😕