Did I hurt this sweet boy? 😭

Hey guys, first off, I'm not a horse rider. This was my first time riding a horse as an adult. I used to ride pony recreationally when I was 3-5y.o. and always with the guide/trainer. Today I rode this sweet 14y.o. Sandalwood Pony for the first time since then, and noticed his tail flicking around (not much), when I approached. I asked the guide if Rocki (the horse's name) would be fine being ridden and he said yes, he's alright. I didn't notice when I got on, but my mom took this video and the excessive tail swishing makes me feel bad now 😭. Did I hurt him when I mounted?? He was calm during the ride though, no tail swishing at all, and he seemed to enjoy it when I rubbed him on his neck.