Biden could be 100% debilitated and he still wouldn't be the reason the US is "fucked". Most US Presidents are nothing more than PR people for the ruling class that won WW2. They are chosen by elites well in advance of our "elections". Trump was an exception and wasn't from the class of people the elites prefer, but he was compliant with most of the wishes of the elite, except for a few issues like immigration and China tariffs.

The reason the US and every other country is "fucked" is because the ruling class has a wildly different view of the future than you and the people you know. They want more control and influence over your day-to-day life, and envision a world where you are an even more tightly controlled tax cow than you are today.

They are using things like "climate change", "the pandemic", and any other focal point of fear they can make stick to progressively strip away what little freedom you have left and to bankrupt the small businesses that allow the middle class to exist.

The biggest dangers right now are:

1. The forced shift in demographics and blending out of local communities, traditions, and cultures through forced mass immigration. If the elites actually respected "diversity", they would cherish and protect the cultural identities of people in their country. Instead they deliberately ship in people who have wildly different values and backgrounds. Over time this dilutes and destroys solidarity in communities and makes the herd easier to control. Seeing this for what it is doesn't mean you are racist. It means the elites are racist for trying to destroy culture and ethnic identity. You'll also notice how this policy of "diversity" only seems to apply to countries with European lineage, while certain countries remain borderline apartheid states that under no circumstances allow outsiders to gain citizenship. There's a reason for that blatant hypocrisy, and if you don't see it for what it is, you are brainwashed.

2. Overreaching regulation and lockdowns bankrupting small and medium sized businesses, while mega-corporations flourish. This kills entrepreneurialism and self-sufficiency, and forces everyone to work for a big corporation, which effectively is a state controlled job at this point (just look at how the governments use private corporations to enforce vaccine tyranny).

3. Vaccine passports (a thinly veiled digital ID and social credit scoring system),

4. Stepped up bank account transaction surveillance (more intrusion into your financial life and living under the knowledge that your government can see everything you do - note this only gets worse with inflation, because the arbitrary 600 USD limits lower as the value of the USD declines, eventually 600 USD won't buy a loaf of bread)

5. Central bank digital currencies (all payments become digital, and when combined with the items above they can begin to directly control and censor your spending. Limit the amount of gas you can buy unless you have a commercial exemption, stop you from buying a wood burning stove, stop you from entering a destination address into your self-driving car if it burns too much energy, etc).

With these things, you will be turned into a 21st century serf, but with less freedom than the serfs of medieval times, because every facet of your existence will be monitored and tightly controlled by the party. You will have no group identity left other than the one broadcast to you through your state controlled social and broadcast media. You will have no way to push back. You'll be an isolated battery in a massive machine that wasn't designed with your future in mind.