Trying to get better as a RDM

[Limonia]

I didn't watch the whole video, but it looked like as if you switch your hotbars by holding R1 and then the direction for the specific hotbar (like R1 + O to get to hotbar 2). Personally I think that's really slow and inefficient.
You also neither use expanded hold controls nor the W crossbar, like soooo many other people.
You can use both the expanded hold controls AND the W crossbar OR only one of them.
Personally, I have set it up so that I use the W crossbar only to DISPLAY my second hotbar, which I access with the expanded hold controls.

The W cross hotbar:
After you activate it, you can access it by double tapping R2 (right side) or L2 (left side).
I find it rather clunky, so I don't use it like that anymore but many people like it.
Here is how you display it:


Here how you set it up:

You can choose which hotbar it accesses, I have cross hotbar 2 left and right because I use it to display my cross hotbar number 2.

On the image you also see how to set up expanded hold controls.
If you hold R2 and then press L2, you can access one half of a hotbar and the other way around.
That's what I use to access my cross hotbar number 2.

For me, the W crossbar is only so I can track what's on crossbar 2, that's why they're the same. But you can also choose to use them for another crossbar. I don't know any class that would have need of yet another hotbar though.

Here's what it looks like for RDM (I changed the position of the W crossbar to under my default crossbar, but where you put it is up to you; the default position is also nice):



The last thing is this:

When set up like this, when you press R1 once, you switch to hotbar 3 (choose whichever you want). If you press it again, you're back to hotbar 1. I use this for things like potions, limit break, summons or just things that didn't fit on hotbars 1 and 2.

Just try it out. After getting used to it, it's much much easier than manually choosing which hotbars to switch to. You can still switch hotbars like you do now if you need another set for mounts, teleport etc.

Also, I've noticed you use the default HUD. For me, it's much easier if the target and status effect bars are near my cross hotbar. I also have the job gauges near my hotbar, and above of it is the party list. I still have enough space to see mechanics and all important stuff is close to each other.

I'm bad at explaining but I hope it helps.