Where can I actually get help?‼️

I’ve been dealing with depression and rage ever since me and the father of my child separated (it’s been 5 months). I have suicidal thoughts and I literally feel like I’m drowning simply because I’m a single mom now and I have my son 24/7 and I get overwhelmed. This post isn’t to feel pity from anyone at all because I know a lot off people have been through this but I truly am suffering mentally and the details would be too long for someone to read. It’s getting to the point where I take it out on my 3 year old and yell at him when he misbehaves for something small. I’m crying for help, can someone please give me advice if you have been through this before or know of someone who has. If you guys want more context and details I’ll go ahead and write them.