Some people are used to not having any money, and they only work a job to pay for their minimum stuff.
Let's say someone is in a situation that they either have free rent (living with a family member) and just work a job for some side things. Or maybe they live in a cheap part of the country where rent is only $500 a month for them, or $6k per year. During Covid people with minimum wage jobs were literally making more money from unemployment than they used to from working, this lasted months. The unemployment in general would last more than 6 months. Then add in a few thousand dollars of stimulus checks. So they made more than a years worth of money without even working. They do not have many costs, they still have a little bit left over and don't need a job yet.
Case two, imagine someone who had never gone on unemployment before, Covid happens and they go on unemployment for the first time. They realize how easy it is to not work and still get a check. Unemployment runs out, they get a new job just long enough that they can leave it again and get unemployment again. Like a drug addict, except it's an unemployment addict, just doing enough work to stop again and get the free money.
Case three, someone who once worked part time at a restaurant or whatever. They only worked that job because they wanted to make $5k-$10k in a year to help pay with something while they either go to school or supplement retirement, or whatever. But Covid unemployment increases and stimulus checks gave them more than that amount of money without even needing to work, so why work if they already got the money?
As a result, there's a shortage of people working. Less is getting done. Some prices increase because they are expected to make the same amount of money as a company, but they have less output due to fewer workers.
Similar thing is happening in China, they made that rule that they could only have one or two kids. Well now they have a ton of old people who are retired and not working, and the working age people are too low in numbers to get enough stuff done and care for the old people. A society needs people to work, there are things that need to get done. You can't consume services and goods if no one is working to provide them.