Having more money to spend gives you the option to make ethical choices, especially on the food you buy. If you are not as restricted on budget you can support local produce, organic and free range animal products and buying from companies that behave responsibly towards their employees and the environment. Once you start looking into it you realise so many purchasing choices can make a difference. You can also opt to pay a bit more for your electricity to have a certain amount come from renewable energy.

I use the Shop Ethical app to help me choose what to buy (which is not free either).