Hi, i cant exercise due to health issues. The most im able to do is walk the dog for 30mins every other day, So I am doing that. I have tried slimming world before and gained weight so don't know where I went wrong there! I'm trying MFP but keep getting told off for not eating enough even though I'm eating until I'm full.
Exercise is not THE most important factor in weight loss: eating the right foods, in the right quantities, is. Start a food diary and write down what you eat and how much of it you eat. Include EVERYTHING. You may find that you're eating more than you think.
Lack of weight loss isn't often due to eating too little, to be honest.