You probably do need a wider saddle. Unfortunately, a common pattern is that the wider the saddle, the more it is padded, and often it's the padding that causes problems in areas other than the sit bones, or they just flat out don't work well for road bike riding position. I've tried almost all of the Terry models and none of them work for me at all - my sit bones are literally hanging over the sides, which makes for a VERY uncomfy ride.
If you haven't had your sit bones measured, start there - you can DIY it or have someone at a shop do it, but until you do you won't know what you are looking for in your next saddle. By DIY measurements I was able to figure that my sit bones were about 165mm - then a few years ago I happened to get a pelvic x-ray and I got a printed copy of it and I was able to actually measure my sit bones on the x-ray... I am 168mm.
I have to date, found exactly two saddles that have worked for me. The now discontinued brooks B68 (I own 3), and the Selle SMP TRK - I really like the design of that saddle a lot (the cut-out is awesome), but it's too padded and I don't like the plastic covering (it's slippery when sweaty), however all of the lesser padded leather-covered SMP saddles are too narrow. I have tried a few other saddles that were okay on my sit bones, but the overall shape of the saddle caused other problems - typically they were too pear shaped for me. The "T" shape of the brooks works very well for me.





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