Did you buy the wrong speaker?
https://www.cnet.com/news/did-you-buy-the-wrong-speaker/
OK, you fell out of love with your speaker(s). I'm just surprised it doesn't happen more often. After all, speaker choices are bewildering, though reading reviews can help, and in-store listening before you buy can narrow the field. Home auditions are even better, but even then it sometimes takes a while to know for sure you've found exactly what you're looking for. It's not easy.
So you did the best you could and took the plunge with a sound bar that fit your budget and size requirements. You loved the sound at first, it really was so much better than your TV's built-in speakers. The sound was great for most movies and TV, but over time you came to realize the bar wasn't cutting it with music, it sounded too thin or bright. Or maybe the sound bar didn't have enough muscle to make Jurassic World: Fallen Kingdom rock your world. Maybe you need a different type of speaker!