Forest soil, how to prepare it for the garden?

And it needs some fertilizer to form humus.

Why not just drive to the recycling center and pick up a few large trailers of "humus" for free? They'll throw the compost at you.

The difference between 1 and 2 cannot be that much. It actually doesn’t matter if 10 or 15cm are removed, and sieving is also time-consuming. If there are no large tree stumps inside, and no ornamental or vegetable garden is desired, I would also tend towards 3.

We carried out 1. However, this was mainly because only coniferous trees were standing here and the soil was extremely acidic. However, we were far from the asking price. We had it done in one go along with the construction of the access road and sand slab.

We carried out 1. However, this was mainly because only coniferous trees were there and the soil was extremely acidic. However, we were far from the quoted price. We had it done in one go along with the construction of the access road and sand slab.

Our civil engineer charges 38 € net per m3 for removal. That already makes a difference with about 1,200 sqm (1,500 minus the house).

Simply choosing plants that can tolerate acidic soil is not an option? For example, creating a stylish heath garden. How moist is the soil?

Sour soil is usually improved with lime. Spreading it and incorporating it yourself with a small machine is not an option? Additionally, buying worms and releasing them afterwards should bring a relatively quick positive effect.