To be more specific: Yes you can do that with Fibaro dimmer2. But you need to set the configuration correct first.
Open dimmer settings
Advanced settings
Switch type: pulsedrukschakelaar (no idea how that is called in English)
At “ruwe configuratie parameters” (raw configuration?) type “28,1,15;29,1,15;” (without the quotes). This arranges for the double and triple click actions to be send through.
Fibaro dimmer 2 shall do what you want. Best used with a momentary switch (one with a spring, that only has one position). And look at the wiring requirement’s, can be quite a puzzle to get existing setups wired correctly. I have about 20 of these in my house… And several where I use the S2 for controlling my scenes.
Just in case you are still stuck, I think you need to set ‘Double click’ to OFF. I think that setting overrides the scene activation so it will just go to 100% on a double click instead of sending the command to your Homey.
By the way, what kind of switch do you have the Fibaro Dimmer connected to? In your Advanced Settings it says momentary switch (which I would recommend), but your flow refers to a toggle switch.
Assuming you have a momentary switch:
Change the “When” card to “Dimmer 2 scene (momentary) Pressed left (S1) 2x”