The question you should be asking yourself is: do I want to have good/exceptional/fantastic fun? If the answer is "meh", "whatever", "I guess", you will inevitably be miserable.
I was reading Vaclav Smil's latest book and he does all these calculations about how much energy we have available to us now compared to 200 years ago. And how much less physical labor we have to do to put food on the table and how many more material goods we have available to us now - in my grandparents' day, about 80 years ago, they had maybe one pair of pants sewn together, one shirt that was washed once every two weeks, shoes had holes in them, of course.
Their job was picking tomatoes. Were they living a worse life than the one I had the opportunity to experience? Certainly yes, from a material point of view. From the point of view of internal feelings, the individual variability in life satisfaction within a cohort is greater than the variability in average life satisfaction between cohorts of different generations. They lived their lives, comparing themselves to people living in the same neighborhood, certainly not to people living in generations yet to come.
In the immortal words of Lorenzo de Medici: "Whoever wants to be happy, let him be so! Because of tomorrow there is no certainty". And sometimes, let me add, there is no certainty of this afternoon either.
Let's say you live in the modern Western world, which is more familiar to me. Modern life has endless opportunities for fun, which includes, for some, finding that meaning of life that is so hard to grasp.
You can dump your partner, in case you get tired of them, and people would understand - a hundred years ago, such alleged selfishness would have been tolerated at best. Maybe it is the answer, how many I have seen spending decades of the one and only life they will ever have with significant others they barely tolerate, when not hate.
You have access to an unlimited number of learning opportunities. We know that agency is supremely important for life satisfaction. You can learn to draw, write, do martial arts, sing, write a screenplay, cook delicious seafood. Assuming you have some disposable income, you can take a flight to some places that until a few decades ago had no sign of civilization. Can you imagine? You can be hypnotized, take some psychedelics, eat and drink as much as you want. Find something new in you and outside of you.
What is the point of it all, you may ask. I can only answer that I haven't become rich or world famous, I don't have world-class skills, but in the fifth decade of my life, I'm having a great time living an exciting life - because I do things that excite me -, which includes some overall minor contribution to society (I don't fool myself thinking I am giving a larger than negligible contribution to society), and which I enjoy sharing with others, but only if they have the right attitude. And for me, that's the point of it all.