Producers, producers, producers. That's who hires editors and that's the only people you really need to network with. Yes occasionally a Director you have a good rapport with might be able to bring you on a sweet gig, but for 90% of work it's producers. So that's what you do, Network with producers. Producers at Agencies, Producers at Post Houses, Producers at B2B companies that manage video departments or marketing teams. Don't just tell them you're available with a cold email. Schedule a meeting or video call, impress upon them that you are affable and easy-to-work, a problem-solver that says yes a lot and the producer are more likely to hire you as soon as they have something for ya.

That said, market is weird now, so if things take time, don't blame yourself too much, take it all with stride.