What kind of dimmer switch do I have?
That dimmer switch looks a bit like a Lutron Maestro, but your best bet to find out for sure is to unscrew it from the wall and look at the back. (Don't forget to turn off the circuit breaker for that outlet first!)
However, as @jsotola noticed, a more significant issue is the light bulb:

&quot;NOT FOR USE WITH DIMMERS&quot;