Its possible to do it alone, but for it to really work the apps etc are invaluable. I know you say you vant afford it but is there any way you coild find the money - for eg stop having a weekly takeaway or going out every fortnight? I find going to group really motivating.
If not, have a look at the sw boards on here. Really supportive. I persomally woulsnt just eat syn free stuff - you need a bit of what you fancy and i know when i deprive myself, i binge. The 5-15syns are there to be used😊 the healthy extras are wuite easy -minimins are good for advice on those. Syns arent a bad thing - its all about moderation and a balanced diet and cutting things out wont work in the long term
It does require time and energy to cook though, not very easy to eat out or buy things on the go, but once you get used to it thats ok.
I know youve not asked but to give you an idea, an average day for me is
Porridge abd strawberries (healthy extras) for breakfast
A salad (either homemade or from work, synning the dressing) or soup, sometimes last nights leftovers
Dknners bolognese, carbonara, curries, stir fries, chicken with veg and stuffed mushrooms, burgers etc
I do have 'treats' - curlt wurly, wine, sweets, cake etc
I train with a pt twice a week, plus try to do 2 exercise classes on top, and walk the dog