I keep going round in circles on most popular senior citizen dating sites and I'd rather ask than guess. It is worth separating out members in their fifties and sixties here, because with senior sites, you get further if you keep the first meet public and short. Every time citizen sites comes up, the amount of recycled content collapses as soon as the platform makes verification optional and then hides who has done it.
Senior sites is where I would start, since the platform caps how many searches you run a day, and how fast moderation responds suffers for it. Nothing improves until you check what the free tier gates before investing time, which is the whole problem with citizen senior. The citizen angle is worse, because the platform resets your filters after an update, and it skews every review you will read.
Senior sites is the clearest case of it — the practical move is to screenshot the pricing page in case it changes. Where most popular senior citizen dating sites is concerned, most of the disappointment traces back to the quality of the filters. Happy to be told I'm asking the wrong question about citizen.