You’re looking for a quick fix by your own admission. It is so hard to make long lasting changes but this is the route you need to go down. I have recently lost weight after 6 years of pretending I was trying but in reality falling into bad habits after 3 days of trying.
Don’t go in all guns blazing as you’ll fail. Each week or few weeks make a small change. I did the following over a number of months until my life style had shifted:
Move more - even just a walk or a 20 min low impact exercise video from YouTube. Try to do some more movement as regularly as you can.
Have a list of easy healthy meals that are quick to cook and look at this when you’re pushed for time. Omelettes are good. I keep frozen salmon and roasted veg in the freezer so I can quickly have a healthy meal.
Find ways of stopping snacking - I chew gum or have a square or 85% dark chocolate then brush my teeth and use mouthwash, this stops me craving snacks.
Gradually shift to more protein, again build this over time. Do homemade bolognaise but have it with salad. Have tacos without the shells, use lettuce leaves. Get protein powder and use it to make shakes.
Have healthy or better snacks at hand, I have 10 almonds. Don’t be afraid of good fats, these are much better for you than sugary snacks.
Build in drinking more water, add sugar free squash if you need to.
If you have a day where you feel you’ve been unhealthy don’t let that turn into the rest of the week.
I work on a 10 day cycle as this is easiest for me to stick to the 80/20 rule. In every 10 day period I have 2 days where I eat more freely such as if I’m going out for a meal I’ll order what I want and have dessert etc or it’s pizza and ice cream one evening. This way you don’t feel deprived.
Try intermittent fasting, I eat my evening meal early at 6pm and have breakfast at 9am. 15 hours of fasting. Find a pattern that works for you.
Rely on better ready meals if you need to. I buy M&S Balanced for You, yes, they’re ready meals but are not full of ultra processed rubbish. They’re handy for busy days when you know you don’t have time to cook.
You will remain unhealthy if you opt for an injection, focus on one small change and keep building on, you’ll be surprised how quickly you notice all of these things building up.