Many people would say that low growth is what the planet needs. In that case what is important is proper distribution of current and future wealth. That means taxing wealth not just income. For example, higher inheritance taxes, increased capiral gains tax and annual wealth taxes. Just as one example restricting pension contribution relief on income to 20 % would bring in an extra 13 billion
a year. It also means cutting out tax havens and not reducing corporation tax below other european countries. Lots of scope for increased taxes without hitting poorer or middle income people. And with interest rates so low lots of scope for governments to borrow and spend on infrastructure etc which will also improve peoples' lives
Will not, has never, won't in the future, work. You can't over tax the wealthy.