A Walk Alone

Assalamu alaikum, so I went for a walk today. Didn't go too far, just to the riverside near our place, and I only sat there for like 15 minutes max before heading back. No one was around-usually fishermen are there, but not this time. My dad says I shouldn't have gone by myself, but he thinks I shouldn't even go two blocks from home without someone with me. I don't have friends, and I'm not really close with my relatives, plus I actually like being alone. Having to make small talk with someone I'm not close with just ruins it for me. I thought the rule was about safety, but apparently not. They think people will assume I'm meeting someone secretly for a date because that's taboo here, and then they'd call me bad names. But I'm not doing that-I just wanted to walk because I've been feeling down lately, and honestly, my whole life I've felt trapped by this rule that I can't go out alone. I'm a Muslim and I don't want to do anything haram, so is it wrong if I don't listen to my father on this specific thing? I avoid sketchy places or spots with lots of men, and I stick to areas where someone could hear me if I called for help. The crime rate is really low here, and we live in a mostly Muslim area.