The weird specificity thing is real, but it's almost always because those apps are designed to be vague enough that your brain fills in the blanks. Like, "Mercury in retrograde affecting your communication" works whether you had an awkward text exchange or literally anything involving words. Your friends asking about your horoscope before plans tells you something though - they're not actually believing it's predictive, they're using it as a conversation starter or a permission structure. "The stars say we should grab coffee" sounds better than "I feel like hanging out."
That said, if checking Co-Star every morning gets you thinking about what matters to you or how you want to handle your day, that's not nothing. It's basically the same mechanism as journaling or fortune cookies - the value isn't in the accuracy, it's in the pause. I've got friends who swear by their apps, and honestly they seem to enjoy the ritual more than the actual guidance. The Pattern especially banks on that introspective vibe where you're reading something poetic and deciding what it means for you. So you're not crazy, but you're probably noticing the hits and genuinely forgetting when the notifications have nothing to do with your life.
The confirmation bias thing that others mentioned is absolutely what's happening. The real question is whether the 8 months of checking these apps has actually changed how you make decisions, or if they're just entertainment that happens to feel personal. There's a difference between "I check this for fun and it sparks good thoughts" and "I'm making actual life choices based on planetary positions," and only you know which one you're doing.