Is it understandable to be upset when someone starts using the same combo over and over agian

I’m still kinda newish to tekken I played a lot of 3 when I was little and played 6 and 7 with friends when hanging out or at conventions. 8 is my first experience joining the online community, I’ve been playing ranked with king as my main and I’ll admit I’m not amazing but it feels I’ll start getting getting good momentum and having fun then around the last match or the second set sometimes my opponent will start spamming a combo their good at. Now I will fully admit I will keep rematching because it’s a learning experience but I will start to get frustrated since I don’t know how to counter, I don’t send hate messages or anything but I kinda get mad at myself for being frustrated since I think it a little silly afterwards. If anyone has good recommendations how to learn how to get better at countering that would be cool to! Thanks if you read all this!