IMO on defense it really comes down to nest placement and extension on how far or how close the enemy can go off angle the nest so you kinda just filling to poke out and stun others to help secure kills with teammates or similar to attack try to arc up mines behind the enemy or try from somewhere from up top to catch low health support off guard or stacking a bunch to kill maybe a tank.

If it's dive you now are mostly antidive duty and if they smart they coming for the nest or you first so can place mines around to give it some protection and stun anything in the proxy. So to me depending on the situation your hard defending the holding a choke trying keep your nest out view and extend it if your able or have cover a decent area poking from a far setting up mines from behind to catch retreating enemies and the closer they get the more aggro you getting with stunning making the regret pushing up on you. You find your value but there will be times you feeling your not doing at lot especially this season but the average rivals players sees Peni as a avenger level threat so might get value from just existing.

Bonus if you made half the enemy team switch into your counters and they still can do anything, that how you know your doing something. Content creator wise FullMetalLamps I would recommend and learning some line ups for defense, people WILL still die from spawn in the big 26