I Need help losing weight

I want to lose weight but i don’t know how to do it I have a baby he is one but my weight is to much I weight 222pounds and I just kinda get depressed because of my weight I don’t feel attractive anymore and is just hard for me I’ve try doing a diet but I don’t know if it is save since I still breastfeed and I don’t have money to go to the gym or to buy lots of healthy things neither do I have insurance to see a doctor to give me advice I’ve seen so many girls in here that have lost some much weight and I just want some advice how can I start

Please help me