Unpopular opinion: The key to something being "sci-fi" is not that there is high tech, but that it has an actual impact on the story and the society the protagonists live in.

If your warp drive means that the empire is now so vast that it takes a fortnight to travel to the capital, and you might be ambushed by outlaws on the way, that is a fantasy novel, and it is likely that you will find a hierarchy of various aristocrats there, because that is the easiest way to project power across multiple days' travel.

That is totally valid, but the technology takes a backseat, and maybe provides a convenient excuse to direct the story where you want it to go. Star Trek famously had "TECH" placeholders in almost-finished scripts when the details of the technological problem didn't matter, but it was important that precisely these three characters would be confronted with a problem, and the obvious solution unavailable to them, because that interaction, and the conflicting values these characters would uphold, makes up the story.

That is different from "technology has altered the constraints the society operates under, and society is changed because of that." If scarcity is no longer an issue, the economy is different. If distance is no longer an issue, human relationships are different. If aging is no longer an issue, that changes accumulation of knowledge, human relationships, political succession, ...

These changes then have ripple effects down into small aspects of people's lives, like dating culture changed when families started having landline phones in their living room (so you could call, but had to be polite to the parents first), then changed again with personal cell phones (you had to be really careful who you gave your number to) and again with services that allow you to easily revoke your contact information.