what people dont realise is although US "owes" other countries $30trillion+
other countries "owe" the us substantial amounts too

an easy option is 1-for-1 cancelation of linked debts between countries

EG if japan hold $1.1trill of US debt. but japan has more then $1trill separately owed TO the us.. they can cencel each others debt thus bring both sides debt totals down

take it one stage further
if japans high DEBT amount of $10trill is owed to multiple countries. the US can do a deal where if the UK cancels its debt with japan. the UK can cancel its loan to the US.
and the US can then further cancel its loan to japan. as a 3 way debt reduction

Inflation is increasing every year and this year also it will increase. You can take some steps to fight against it like investing in good stocks instead of keeping money in banks.

OP the world does not work like that, the more you spend the less your bank account becomes especially when you Are spending it on depreciating goods like cars, unnecessarily experience items that doesn't generate any income then be certain that you won't be getting anything back from doing that in return. Spending carelessly is a highway to financial wreck.

You can spend your earnings on things you actually like but don't me silly about it also you can make it a habit to buy things and properties that actually have appreciating value and example is land, houses, this types of luxury can still be very profitable even in the future.

I don't know what you mean by "How is gold bought in the bank" I think banks do not have precious metals like gold you can buy gold in any jewelry shop without approval from banks.

The good thing about investing in Gold the price is pretty stable and you can hold it for a long-term investment compared to investing your money in the banks with only a small P.A interest.
However, both of them are good investments because both of them will give you profit but Gold always depends on the market value it may drop or increase in value compared to banks where you can surely make a profit from the interest.

Who has officially canceled covid, I think this is a big turnover of money in healthcare, but there are many indicators that a new pandemic is possible. To what extent does this correspond to reality, measles is also multiplying, will the world be covered by new diseases on a large scale? Or is it an economic process?

How to save savings in inflation, there are many deposits provided by the bank, but banks often go bankrupt, does it make sense to buy gold? How is gold bought in a bank and interest is issued on it?

The essence of this expression is suitable for very energetic people, because they can make money on everything. Therefore, they spend a lot and get twice as much, the type of people who can achieve a lot always say like this expression.

There is no definite answer to this question as inflation rates can be affected by a variety of factors, including changes in government policies, global economic conditions, and natural disasters. However, many economist predict that inflation may increase in the coming years due to factors such as rising commodity prices and increased government spending. Inflation can be caused by increase in demand for goods and services exceeds the supply prices tends to rise. Increase in production costs, increase in money supply, decrease in supply of goods and services prices tend to rise due to scarcity. Natural disasters can impact also Inflation rate.

The usa as far as I am aware has defaulted twice prior.   During Woodrow Wilsons presidency and when the usa came off the gold standard.   

Economic experts are not perfect, they are only speculative based on their experience and the available data at their disposal, so their speculation might be right or wrong. However, it should be noted that inflation is a global issue now and might have subsided months ago. But the recent inflation figures are now causing panic again as the curve is now shifting higher globally.

https://i.postimg.cc/jjqJDBJN/US-inflation.pnghow to check if my keyboard is working

The US which is most referenced in this regard since its currency is vital to the world, is facing increased inflation and it was not a good figure last month. Experts believe that it will be rising till 2025 as you can see in the graph above, so we should get ready for it. While below image shows the last CPI figure of the US. The previous value was 0.1% and the last value was 0.1%, which speaks that inflation is still bitting.

https://i.postimg.cc/DyMmTsPQ/CPI.png

And for your reference, inflation doesn't necessarily have to grow with the rates as I've experienced, other factors are contributing as well. It's the USD that has the blessing of inflation as the currency is a Safe-haven asset.