I think people voted for Reform because they are tired, and scared.
The cost of living is squeezing most of us dry. Private sector can no longer afford to pay wages, (or aren't incentivised to cut shareholder profits to do so,) and the government slashing the public sector has left tens of thousands out of work, with more to come when the councils reform. All in the name of saving money but these were tax-paying people (and vital roles) and the finances will not balance out over the longer-term.
There are very few jobs available, and each newly advertised role is getting hundreds of CV's. People can't pay their mortgages, or afford small luxuries, and they are terrified. Women are giving birth in the street because the hospitals are full, and people are dying because they can't get the treatment they need. The benefits bill is higher than the tax bill, and harder times are coming.
No single party is representing what the people want. We want jobs so that we can support ourselves and our families, we want flexibility to be able to afford childcare, we want accessible healthcare, we want to feel safe walking down the street.
Meanwhile, the media is shoving down our throats the migrants streaming in and costing money, our services, and more than this, we are seeing it and feeling it, in our hospitals, our town centres. It feels a lot more real and right-now to people than naughty billionaires not paying taxes.
People feel there is a rejection and a taboo of British culture. Despite white Britishism being a tiny minority of the world's population, we are being vilified for celebrating our culture in our own country. I have seen this - my workplace telling me not to say "Merry Christmas" or not to have a Christmas party in case it alienates staff members or makes them uncomfortable.
To clarify, I would never vote for Reform, because I find them abhorrent. And I think the Greens are insidious and even more dangerous to our nation as a whole than Reform. Labour have proved themselves useless and out of touch, and Conservatives had their shot and made things worse.
I don't know what the answer is, honestly. But you asked why people are voting Reform, and it is because they want change. I hope the party in power starts listening soon before we see serious consequences.