I feel like this summer is already gone

The weather forcasters say this summar would be hotter than last year. But I was sure that this summar would be shorter and cooler than last summar because weather prediction is always wrong except for the typhoon. So that's why I was happy to hear the news of the weather forcaster's prediction on this summar. I feel like this summar is already gone because I don't have to use fans or an airconditioner. Fall is coming and I don't feel happy now. I had so far been immersed in shadowing English sitcoms from last year but I can't still speak English fluently. Sometimes I get frustrated when I see someone learn to how to speak English so well in a short time. Am I dumb? Should I move on to another thing that makes me feel good? But I don't want to do that because I have spent so much time on English and I still love learning English.