So just looking at inflation and prices is no way to picture the quality of life or standard of living for a country.
So other than these, what else can be used to get a broader picture of the standard of living for a particular country.
Well, short answer, everything, the long one is on the wiki:
Standard of living might be evaluated using a number of characteristics including as the quality and availability of employment, class disparity, poverty rate, quality and housing affordability, hours of work required to purchase necessities, gross domestic product, inflation rate, amount of leisure time, access to and quality of healthcare, quality and availability of education, literacy rates, life expectancy, occurrence of diseases, cost of goods and services, infrastructure, access to, quality and affordability of public transportation, national economic growth, economic and political stability, freedom, environmental quality, climate and safety.
This is the problem with it, it comes with funny situations, for example, the US gets penalized for public transportation, but for most of them, it's pretty comfortable and affordable to drive in a car, so a country might score more points despite putting their citizens through 3 commutes for 1 hour rather than 20 minings of driving. Political stability, lol, Turkmenistan has the son of the former president in charge and they have ruled since 2006, while the Netherlands has been going 9 months with no government.
Romania has 96% housing ownership, Switzerland one of the lowest in the world with 35%.
Healthcare is cheaper in Russia than in the US, yet the average male has a life expectancy shorter by 10 years.
And coming back to inflation and prices:
Turkey has a 70% inflation rate, Bangladesh and Honduras 5%, which one do you think is better to live in?
Botswana has double the purchasing power per capita of Vietnam and the same as China, do you think it's really accurate?
If somebody earns 10k and spends basic necessities 4k, he can afford a 100% increase, if somebody spends for his food and rent 1000 but that makes 90% of his income, a 20% increase will make him unable to live on.
Rather than asking about the standard of living, you should simply ask if the price rise has made some people forfeit their plans of buying something, far easier to answer, and far easier to quantify.