The beauty of FW is that you can constantly fleet up and coordinate with others via Militia channel regardless of the activity levels or areas of operation of your FW corp/alliance, or even if you don’t have one at all (ie. NPC FW corp). It’s not hard to fleet with the militia and take part in ops held by others, or form your own and have random militiamen join since you can create Militia-only fleet adverts.
Like, I usually participate in Minmatar FW and the central Minmatar FW alliance is Ushra’Khan - most ops are held by or in conjunction with them, and even those who aren’t hosting UK-based ops might use their Discord server for voice comms for their fleet simply because basically everyone else in Minmatar FW is already on their Discord. Now I’m more-or-less in a 1-man FW corp, so I frequently join their fleets or form my own using their comms and my fleets are primarily comprised of their members simply because they are the dominant entity in Minmatar FW. Banding together with randoms is how I led the capture of Sosan a while back - I logged in, saw the system was near 100% contested, posted a fleet advert and kept pitching it in Militia channel “Sosan is almost vulnerable, help me flip it”, 20+ people joined in, and over the span of 4 hours we took it over, all without any prior planning and only using the help of random militiamen.
If you REALLY want to be part of an active corp/alliance that itself engages in FW, you really should consider relocating, but I cannot emphasize enough how unimportant this is when you can simply use fleet finder to find militia fleets, or use militia channel to coordinate with others (and post fleet adverts, or ask others if you can join their fleets) and join the Discord servers of the major militia alliances to coordinate ops with them whether or not you are part of them.