Apologies for the total digression from the point if the thread, but:
@Alinino124 since you ask, I shall explain.
The NI contributions made by people who were working in 1950-1960 paid for the people who were too old, too sick or otherwise unable to work in 1950-60. At that time life expectancy was circa 65 years and less than 8% of the population was over 60 so there was enough to go around.
The NI contributions made by people who were working in 1970-1980 paid for the people who were too old, too sick or otherwise unable to work in 1970-80. At that time life expectancy was circa 70 years and around 10% of the population was over 60 so things were a little more stretched.
The NI contributions made by people who were working in 2010-2020 paid for the people who were too old, too sick or otherwise unable to work in 2010-20. At that time life expectancy was circa 81 years and around 20% of the population was over 60 so things were getting seriously unbalanced. Increasing retirement age very slightly didn't really help much.
Those contributions you made over 50 years are spent. They went on your own parents, aunts and uncles. That money is gone.
The people expected to pay for those who are too old, too sick or otherwise unable to work in 2020-30 are those in work now - that is, people in the gig economy who are making a pittance because their employers have found loopholes in the law to underpay them and fiddle the books to avoid NI contributions. So surprise surprise there's not nearly enough money.
I'm not saying it's right, but that's where your money has gone and there's not a thing you can do about it short of total socialist revolution (and I don't think that would solve it either)
Going back to the 1950s and tying pension age to "life expectancy minus 2 years" would help, if you can get a time machine.
Failing that, some kind of system where each generation of elderly pool their resources in some way so that those unfortunate enough to need decades of care get supported in some way by the wealth of those who manage to die without needing expensive care, to even-out the peaks and troughs of the extremes of good fortune and bad fortune. But any time something sensible like that is suggested the tabloids start screeching about a "death tax" and the politicians can't make it happen, so the spiral into total collapse continues.