Eating healthier is not nearly as complicated as this post makes it sound, unless you have unusual underlying medical issues or are aiming to sculpt your body in a very specific way.
To lose weight, eat about 5-10% less than your daily caloric requirement (there are tons of free calculators and counters online). Water helps to feel full. Increasing exercise can help if changing dietary habits is a struggle.
To eat healthier overall, eat less processed foods, more fresh stuff.
That’s it. This is all the advice most people realistically need to lose weight/eat better. The hard part is being disciplined about it. Now, discipline, on the other hand, that’s a very personal matter.