Look them up in local YWCA or local Meetup
groups or other non profit resources available to you. Many
groups exists in many cities and towns...like thousands!! At these groups you will meet others in the exact situation you are in. Get yourself a buddy or two from the local group, and help each other get to the healthy weight.
I think you already learned this from the past, that by doing things alone, it don't always lead to success.