This notion that the US is somehow weak because it has seemingly not won any wars since ww2 misses something:
The US has historically been held back by internal unease over human right violations and the morality of the wars. Were the US to prosecute wars like how Russia does (for e.g., in Chechenya and Ukraine) the results would likely be devastating.
The Taliban did not beat the US. The US realized it was a fools errand to try to democratize Afghanistan. The fool-proof way to "fix" Afghanistan would have been to level it, lay waste to it, making it virtually uninhabitable, but that was morally indefensible.
The US has historically been held back by internal unease over human right violations and the morality of the wars. Were the US to prosecute wars like how Russia does (for e.g., in Chechenya and Ukraine) the results would likely be devastating.
The Taliban did not beat the US. The US realized it was a fools errand to try to democratize Afghanistan. The fool-proof way to "fix" Afghanistan would have been to level it, lay waste to it, making it virtually uninhabitable, but that was morally indefensible.