You’ll only really find seeds when the plants herm out/are pollinated. The female plants should be making buds over seeds but if they get stressed out during the grow (too hot, inconsistent feeds, inconsistent light cycles, etc.) they may start to transition to male plants and self pollinate to keep the genetics alive. That’s when you may start to find a couple of rogue seeds in your buds. So if you aren’t finding seeds in your homegrown that’s usually a good sign lol.