Wave priority

Call me a nerd, but I'd like to set things straight... and it made me feel a lot better having done this.
Posting this to clarify the "unspoken rule" of surfing. I've been surfing for about 7 months now, self taught. I try really hard to respect other surfers out there - especially since I still consider myself a beginner-intermediate. I'm at that level now where I want to advance and catch bigger waves while still having fun.
This particular wave was my last one of the day after being out there for about 2.5 hours. I backed out of a lot that day letting the more experienced surfers catch them. But I thought for sure this was my wave. As you can see, I look to see if any riders are on it and after seeing no one up, I figured this wave was fair game so I caught it. About halfway through my awesome ride, this guy cut me off and as I turned around to look I fell. It was his last wave too, so I decided to calmly tell him on shore that what he did was pretty cheap and it was clearly my wave. He got extremely offended and started cussing me out. I held my ground but wasn't about to exchange punches so I explained my position and walked away.
I'm posting this purely to see if I was in the wrong. If so, I'll accept it and become a better surfer. If not, then I'll know when to push back on waves that are rightfully mine.
Any feedback is greatly appreciated.
Posting this to clarify the "unspoken rule" of surfing. I've been surfing for about 7 months now, self taught. I try really hard to respect other surfers out there - especially since I still consider myself a beginner-intermediate. I'm at that level now where I want to advance and catch bigger waves while still having fun.
This particular wave was my last one of the day after being out there for about 2.5 hours. I backed out of a lot that day letting the more experienced surfers catch them. But I thought for sure this was my wave. As you can see, I look to see if any riders are on it and after seeing no one up, I figured this wave was fair game so I caught it. About halfway through my awesome ride, this guy cut me off and as I turned around to look I fell. It was his last wave too, so I decided to calmly tell him on shore that what he did was pretty cheap and it was clearly my wave. He got extremely offended and started cussing me out. I held my ground but wasn't about to exchange punches so I explained my position and walked away.
I'm posting this purely to see if I was in the wrong. If so, I'll accept it and become a better surfer. If not, then I'll know when to push back on waves that are rightfully mine.
Any feedback is greatly appreciated.