Gamma is set in the render settings (on the right-hand side, under HRDI optimised output)

There are quite a few threads featuring the sage advice of one Bagginsbill on the care and feeding of Gamma Correction, so I won't go into whether you should use it or not: that depends a lot on your workflow and preferences. However, to use it implies some workflow changes. Pay-for lights - even the popular ones - don't really take GC into account. Neither do any materials.

For lighting, I'd develop my own.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks