Agreed, We literally took over Afghanistan in a month and installed a government but somehow we lost? We just don't really have a dog in the fight anymore. This isn't defeat.
Yes, the US lost. The government in Afghanistan doesn't have much institutional depth or very firm control of the country. It's not a military defeat in the sense of having your army crushed, but an occupation that never achieves peacetime status is a failure by great power standards. Don't feel bad though, the US is the 3rd empire to make the exact same mistake in Afghanistan. It'd be comical if there weren't so much human suffering involved.
Giving up isn't defeat? If this was sports would anyone accept that definition?
The US just signed a peace deal with the Taliban agreeing to and withdraw all their troops and release aligned 5000 prisoners, the Taliban are also allowed back in government. Technically they could be in power at the next election.
What actual goal was fulfilled here after two decades of war?