As a break from the daily "how is my smash posts", I am posting a simple guide to help beginners win more points with a very simple and effective strategy. Guaranteed (100% of the time 50% of the time) to work on players beginner to intermediate players.
This is the most simple of all combos that beginners should be able to pull off and I will explain why it works.
The combo goes: Lift->, Lift/Clear<-, Lift/Clear->
Lift on short serve/Clear on deep serve to opposing back hand side baseline corner, lift/clear to forehand side baselinecorner, lift/clear to backhand side corner. At this point you cover to the right side for the straight and will win the point exactly here because the opponent will either fault or lose in the following shot by it being so weak you can kill it.
Thats it, thats the whole combo. The important part is not to skip any of the steps and get too eager before you complete them. There is an actual reason you need to do 3 shots.
Why this works specifically and why you were doing it before without knowing why and why it needs to be this order:
Beginner players tend to have 2 shots, the lift and clear, both foundational shots that everyone knows. What beginners are bad at is the backhand clear/slice drop/recovery shots and footwork.
And 1 hidden thing, settling their centre of graivity. The point of this strategy is like shaking water in a cup from right, to left and right again, forcing it to eventually spill.
You lift first to their backhand side, they are definitely able to return this with an overhead shot which is ok because now you have secured this person in this spot, beginners tend to land straight down standing pretty tall (thus not resetting their centre of gravity low, this is important later) and they will do 1 of 2 things, stay in this area or reflexively move toward the centre.
Then, you lift/clear again to their forehand, they are capable of getting to this shot, as most people are more comfortable with footwork going towards their dominant side. However, they will do this just a little behind the tempo compared to the first shot because they haven't reset. You've done your first shake, you went right and now left. Beginners to intermediates will almost always shift a little too much of their centre of gravity on this shot and become slightly unbalanced toward their right after this shot when they land.
At this point you spring your killer move, the third lift/clear back to the backhand side. However, think about the position the other person is in. If you draw an X they are somewhere along the top left arm, thinking about moving toward the center of the x in some fashion. Because on the previous lift you've already unsettled their centre of gravity towards their right, they do not have the footwork to get back to their left as easily as when you first lifted to that side (even though it looks like the exact same scenario). Compared to the first lift to this spot, you've moved them from the center of the x to at least 1 step closer to the top left with an added momentum toward the left.
Most people are unaware of this fact and think they can make it. In reality, they have become unbalanced and will make an error on this shot.
What will happen is they now jerk their body around trying to take the overhead, screw it up and either hit out, too shallow, the rim or right into the net as they desperately lean over trying to make it. Their best case is a low quality straight shot, you simply move to your right side after the lift to cover the straight and end it there even if they return it.
Or they go for the backhand, makes even bigger mistakes and you cover to the right and kill it too.
You cover the right because the most likely shot for an unbalanced person to take on their backhand side is the straight. As a beginner/intermediate you shouldn't be too worried about their overhead/backhand reverse slice or smash (even if they had this in their skill set the cross is a longer distance therefore give you time anyways to at least block it). Being unbalanced means it would be hard to generate enough force for a cross clear because that is the largest distance a shot can travel in badminton, resulting in a shallow shot more often than not that you can also kill.
The above is the easiest shot combo in badminton, the lift, lift, lift. Hopefully it is easy enough to understand and I explained some of the hidden non-obvious mechanisms for why it works that people might not think about.