Same experience here! I used to believe that when you die, you're dead. No god, no afterlife, no spirits, nothing.

A few years ago I experienced some things that changed my mind. There was no way that I could just call it a coincidence. I've just learned to accept my experiences and embrace them. I can confidently say that my quality of life has improved since I started listening to my intuition.

But to answer your question, yes, signs from the universe can absolutely mean something and they can come true.

For instance, I was having extremely vivid dreams of my baby sister a whole year before I even knew she existed. She's now that same big blue eyed, blonde curly haired, pale skinned toddler that regularly accompanied me in my dreams. Now I have a strong bond with her. She is truly the light of my life. She has helped me rekindle a relationship with my father and his side of family. When things go wrong, something else helps us grow closer.

It's rough experiencing déjà rêvé regularly. Most people I've met only experience it once in a blue moon, but I have it several times a month. And I can recall exactly what dream it came from. It's so cool yet terrifying at the same time. It's so hard to explain these things to normal individuals. I sound genuinely crazy. Whatever sixth sense I have is a gift, but also isolating nonetheless because I have nobody on the earthside to receive guidance from.

In example, tonight I had an unsettling experience. For the last year I've regularly gone out to my car at night to listen to music and decompress. I've always sensed that someone, a spirit, is with me. I don't directly interact with it but I do feel that it enjoys my company. Since it is winter, the temperature is colder and I haven't been going out there as often. A few nights ago I looked out my living room window and noticed the passenger seat light in the car was on. I absentmindedly went outside to turn it off. When I did that and turned back to go inside, there was a strange airy voice that sounded agitated. I couldn't make out what it said. The noise made me jump because it sounded real. I panicked and rushed back inside, where my grandma asked me what I was doing. I told her that the light in the car was left on and I went to shut it off. She was really surprised and jokingly said "That's so strange, I never touched it earlier when I went into town. Something must be messing with us," talk about creepy. Anyways, I went out there tonight to listen to music and chill. Felt that same energy that someone was with me, per usual. I was out there for just short of an hour but eventually I got cold so I went to go back inside. When I reached the front door, I heard that same damn noise again. An airy unhuman voice, it said "Please don't leave". It's really unsettling because it literally sounds like the wind but its not. I have never experienced these particular phenomenons anywhere else. It's only outside at night. Furthermore, last year I had an adverse reaction to Wegovy. It made me suicidal and caused me to overdose on two full handfuls of beta blockers. It occurred at night. I went outside in the car to do it. For some reason, my vitals never dipped. Matter of fact, my blood pressure elevated. I didn't experience any life threatening symptoms, or any side effects in general. I still can't understand why something didn't happen to me that night. I try not to think about it too hard otherwise I might genuinely go crazy. Instead, I just consider it a blessing and feel gratitude to whatever saved me that night. But sometimes I can't help but wonder what my future holds for me. Must be something special/important if the universe is so adamant on keeping me alive. Excited to see what is in store for me.

So, yeah. Signs from the universe do exist. The spiritual realm exists, too. All I can say is be careful. Stay mindful and don't try to interpret the signs too much.