I cannot answer for United States, but this is a well known and documented situation in Paris and suburbs.
This is unrelated to covid and lockdown. Those situation existed way before Covid.
Of course, all the links I can provide will be in french. Sorry about it.
Youtube french video : she live in the hotel she works
French: she live in an hotel for 1700/month with her 3 children
This second example is particulary jarring. I lived 5 kilometers away from the hotel this woman was in. in a 100 m² appartement. For 'only' 1200/month.
So yeah. those strugling families pay even more to have a roof. She earn 1250/month from social care. She had to borrow money from her family and of course going much more in debt.
In france, law in rental are all in favor of the rentee. If a rentee stop completely to pay. He can easily stay in the appartement for 2 more years without paying a cent. And despite going to justice, the renter is unlikely to ever see that money.
In the second exemple. The previous renter of the women is still due 7000 euros. he's unlikly to ever saw them.
That make renter very exigent when choosing a rentee. And basically if you don't have a long term job, it's a big no-no.
We have in france a system of social housing with low rent. But in paris, there is so many people wanting (or needing) to access it that the delays frequently go over 5 year.
So people have no choice here. They have to live in hotels. Either slum-hotels that prices are equivalent to appartements but without quality or decency. Or decents hotels that are more expensive than a normal appartement.
Ps : I appologise for gramatical errors. I'm bad at english grammar.