How to cope with being a single mom of 2 toddlers..

So the father of my kids cheated and leave us.. i am doing everything for my kids. Since last year. I have a 3 year old and a 2 year old... sadly they will grow up with no happy family no dad either. Just me. I havent been myself lately and i feel down and been very depressed to where i been thinking about leaving the earth.. cuz im tired and stressd and sad i cant do it. I wanted a partner and happy family but i didnt get that and it breaks me... i do have help from my parents and some family members who are helping me watch them but its not the same as a partner that is helping and being with me all the time. 💔.. i need help tho mentally i feel like not being here i am going to be 30 years old this year 💔 i feel like i want to be single forever because i cant deal with people who treat me bad anymor. Sadly i neverr been married or in love before... i will probably never experience it other than love for my kids. I love my kids and its a different love obviously.. what do i do with my life???