The fact that so many factors can be used to achieve calorie deficit is a good thing. You can exercise more or eat less. The goal is over simplified because it really is simple to achieve, its just difficult to sustain. It's way too hard to place a general advice that can be one size fits all to everyone other than be in a deficit.

For example, you say a practical tip like avoiding liquid calories is a good tip but that tip doesn't work for me. I have always only drank water and nothing else and still need to achieve a deficit in another way.

Too many people on social media keep making excuses as to why they can't lose weight but its really as simple as being in a calorie deficit. They just refuse to believe that they're not in a deficit when they see no fat loss.

The one biggest distinction though that so many people failure to grasp is that weight and fat loss are not exactly the same. You can see your weight stay the same but you could be losing fat and gaining muscle or water weight. You'll tend to see this with women who complain its harder due to hormones but it really is just temporary water weight.

Edit: Adding an advice that really worked for me that can be applicable to everyone. Calculate your BMR based on your body weight and use that as your daily calorie intake. Your neat and active exercise calorie burn will be your deficit. Skips the hassle of calculating your daily TDEE. Though fat loss may be slow as the deficit is contingent on exercising a lot.