Any one a sleep consultant???

Someone please help me 😭😭 I have 2 girls an almost 2 year old and a 5 month old and they don’t sleep and I can’t handle it anymore... if I give my oldest melatonin she will sleep decent but I hate giving it to her (please no hate) I seriously think something is wrong with me and my kids sometimes they will go 24 hours without sleeping or if they do it’ll be like an hour or something and I don’t sleep very well either every since I was a baby my mom said she had to have my grandma and aunt take me cause I would never sleep and as long as I can remember I’ve never been able to sleep without taking something to make me sleep... I haven’t slept in days and I’m seriously losing it someone please help...

Also I have taken them to a few different drs about their sleeping and all I get told is as long as it’s not affecting their growth and development it’s just something I have to suffer through