Not sure where you're moving from or if you've birded Florida before but it can be awesome here, particularly over the winter months when all the migrants are passing through or spending the winter. The two main birdwatching clubs are The Villages Birders (
Village Birders | The Village Birders) and The Brownwood Birders (search for "Brownwood Birders" on FaceBook). The former has monthly meetings with great speakers and does a lot of walks outside The Villages and a few inside. The downside is that they don't meet during the summer months. The latter has no meetings but does walks, mostly inside The Villages. They have weekly walks during the main season and monthly walks during the slower summer season. Both groups are full of helpful, friendly birdwatchers. There are also hiking clubs if you like to walk further and faster than us slowpoke birders.
There are multiple bicycling clubs that do what I think of as "longer" rides (20+ miles) outside The Villages. Of course, you can also bike on any of the bike & walking paths, the multi-modal paths and the roads in The Villages (though NOT on the nicely paved paths in the Championship courses, to the dismay of some bikers).
There are clubs for just about any games you can imagine but if you like a game that doesn't have a club for it, find 10 or 15 people who like it and the rec center folks will help you create a new club for it. After all, it's 3,000+ social clubs
and counting.
My wife and I aren't really nightlife people either but many of the bands (which play from 5-9 nightly in the squares) are surprisingly good and worth giving a listen to. Having a seat on a balmy night watching folks dance (particularly the line dancers) to a good band is more fun than you might think.
There are any number of social clubs dedicated to singles. You can make friends here if you try though of course you can be lonely here if you don't get out there. Social clubs are a great way to meet people, as are sports. I suppose you can meet folks hanging out at the bars and there are plenty of folks here who do that.
There is a ton here to do and it can be overwhelming. Just remember - you don't have to do it all! Just because your neighbor has become addicted to something (pickle ball and water volleyball come to mind) doesn't mean you have to as well. Try some new things but remember that you're here to relax, have fun and enjoy this stage of your lives.
Good luck finding the right home for you. Despite it's huge size and vast amount of construction, there has been quite a shortage of houses for sale of late. People are buying like crazy and driving the prices up. Of course, that's been happening pretty much everywhere and you might benefit from it when you sell your house.