This is a controversial question. There are arguments for and arguments against raking leaves. This becomes particularly interesting when many leaves come onto the ground, namely in autumn.
In principle, scattered leaves are not bad because they are a very good fertiliser. And especially with plants, you should not rake away even a larger layer of leaves. These serve as a cover in winter, so that the plants survive it well and do not freeze to death.
On lawns, however, you should avoid too many leaves at all costs. Otherwise your lawn will die because it is deprived of oxygen. Nevertheless, scattered leaves are by no means a bad thing; on the contrary, they are a good natural fertiliser.