My bottom hurts, and then my legs…

Last year at the start of summer I got myself a new bike (GSX8R), it’s not exactly a super sport when it comes to riding position, but after 20 minutes my bottom starts to hurt and after 40 it’s unbearable. YouTube is full of videos saying this bike so super comfortable and they can easily ride for ~2 hours before needing a stretch.

I’m 6,3" tall and I weigh 100kg, I do have a fat bottom but I think I’m sinking through the seat so it kinda feels like I’m sitting on 2 metal pipes. It’s kinda hard to explain but I think it’s somehow restricting blood flow to or from my legs. It’s just a guess.

I don’t know how to make it more comfortable to ride, also there isn’t exactly any “comfort seats” for this bike yet, only a “styled seat”. At least I haven’t found one. I’ve ridden it for 2500km and it’s only slightly improved since I bought it. Besides this issue I really like the bike, but unless I can fix this issue I’m probably gonna sell it.

Do I need a harder or softer seat? Or maybe something else I haven’t thought of yet. I had a bike a few years ago and I had no issues then. I did however weigh 80kg back then.

Anyone who had a similar experience? What did you do or I am I the only one?

Btw my first post here.