Certainly not. For thousands of years, people have lived without money even existing and they have been happy, or if they weren't happy, it was because of bad health, lack of spiritual and religious fulfilment or loss of loved ones. Being unhappy is OVERWHELMINGLY because of important life problems, like death, bad health, lack of family or friends who love you or lack of religion to give you mental peace, NOT financial status that tingles your ego or allows you to buy things you do not need and which cost a lot more than they should. There are a lot of millionaires who are unhappy because they work too much and miss time with their family, friends or are simply overstressed because of it, and there are a lot of poor people who have families they love who are happy. And to give a quantifiable study, "13% of millionaires said they currently had enough money to be completely happy; the vast majority reported they would need their wealth to increase by 500% to 1,000% to reach a "10 out of 10" on the happiness scale". This shows that the rat race is real, and that we're raised to be psychologically addicted to producing income, even those millionaires (who clearly are rich enough to live the life wanted by most of the general population) say they want to increase wealth by 500%, which is ridiculously much for a millionaire, this shows that not even that buys them happiness, because of their mindset of always needing to produce, the material way of life. People who live needing love, religion or friendship often feel happy with less resources and their happiness is way less likely to be taken away (by a loved one's death vs not getting a 500% increase in wealth).

It doesn't fix everything. Of course it can be an enjoyable thing to be less stressed about bills, but you cannot measure the overall happiness of life simply by how "easy-mode" your life feels overall. Not to mention, by World Bank studies, only 10% of the overall global population lives in extreme poverty, so it cannot be said that the majority of people struggle like those people. Also, very important, when talking about money, it's important how we define the term, if we're talking about living in a country with a functioning government where people have jobs, can eat and not starve (unlike the extreme poverty in Africa, for example, because of the lack of a stable civilization there or like terrorist attacks in the middle east and Africa, as an example), then we have no reason to be ungrateful and simply want more money in order to gain social status, we should seek deeper meaning in life.

You're deflecting all statistics and arguments (which have been many, honestly) by talking about rent or food. I have explicitly said that the percentage of people unable to pay for rent or food (meaning, homeless people) is extremely low and cannot be used as the main argument for the discussion, and it's as simple as that. And the majority of people are able to pay for food and rent, but there are still a lot of wealthy people who sit alone in their mansions and are miserable, so money did not buy happiness for them, because it's a higher human feeling that simply buying jewelry or fancy cars. And since you've been unable to respond to those arguments, I doubt you will even try to access the human emotion and moral philosophy part of the debate :)