Giving up , sick of single but still a mum

I think I've had enough! I've been a single working mum for 5 years since I left my abusive husband. He was ex army and has PTSD I have supported Him all the way to this day . I have raised my kids on my own for the past 6 years and I thought I was happy with that. My kids are amazing. I do get on dating sites which either render guys sending me their penis or they say hi and then want to meet when I have my kids