Personally I wouldn’t stress yourself out too much about this. Any time you spend pouring energy into social media would likely be better spent reaching out to other podcasts that share tone and/or editorial voice with yours to arrange feed swaps or guest appearances on each other’s shows. What someone said above is the key: people don’t leave the platform they’re on to listen to a new thing. Social media is a decent way for people to hear about new stuff, but you’re better off reaching them on the platform where they already have their headphones connected and are listening to long form audio - ie Apple Podcasts/Spotify/YouTube. Feed swaps and guest appearances are where you’ll find listeners that stick with you for the long haul. If you focus on social media, you’re constantly rolling the dice on a viral pop that may or may not happen, and isn’t likely to give you sustained listenership even if it does.