what’s the best way to save money against inflation?

Invest. Your money is losing value; spend it to buy things that will appreciate with inflation, or faster hopefully. Commodities that aren’t likely to drop in value. Real estate if it’s not in a bubble. Goods and services you need that are likely to increase in costs going forward.

Inflation encourages spending because of reduced value over time rather than saving. Investing appropriately hedges against this.

That said, I’m not a financial advisor of any kind. Good luck.