Life doesn’t make sense even after a successful career

Edit: this is not a bragging post, I just don’t know what to do. Hi, I am born and raised in Delhi in a lower-middle-class family. There’s something that has been bothering me for years, and I’ve finally gathered the courage to put it out here. I’ve been living on my own in Europe for the past four years. I wasn’t the brightest student in school, but during my bachelor’s, I really turned things around. I moved abroad for my master’s at a top 30 university, aced the program (top 1% of my class), then transitioned into the industry, where I had a successful career—two job switches and a promotion within two years. Now, I’m back in academia, pursuing my doctorate at a top 50 university. On paper, my professional life looks great—my CV and LinkedIn are spotless. But personally, I feel lost and frustrated. I live alone, don’t have many friends, and do most things solo—travel, dine out, etc. While I’m generally okay with it, there are times when it really gets to me, making me question the point of it all, it doesn't make sense. I’ve tried getting into dating but haven’t had much luck, partly because I’m still too closed off. My last relationship ended badly—my ex left me for someone else just five days before I moved to Europe—and I haven’t dated since. I’d say I’m decent-looking, a "short king" at 5'8", and can hold small talk, but something just isn’t clicking. To make things worse, my relationship with my family is deteriorating. We had issues before, but the bond is fading fast, and Its just frustating as I dont have any sibling bond or special bond with family. Past year there have been incidents which makes me think I am really own my own. Long story short—while my professional life is solid, that’s all I have. Should I just accept this, or is there hope for a better personal life? I’d really appreciate any advice from anyone who has been in a similar situation.