Letting rainwater infiltrate - cost-effective option?

What would be against having two rainwater barrels (visually patterned, so not the green ones), possibly equipped with a tap, so that you can occasionally use the water with a hose for lawn irrigation after it has rained one day? I have no clue, but for example, two 200l rain barrels at each of the two downspouts should be enough for the property, right? The price would probably come to about the same (no additional digging costs + effort for installation as with other alternatives) and you could also use the water now and then. From my amateur perspective, only the external appearance would speak against it.

In a cistern, the water stays in the container and in the infiltration well, the water seeps into the ground.

If it rains a lot, that’s not enough. And if they then overflow, you have the water right by the house. During a heavy rain, there can be up to 10 liters per square meter per hour. With a roof area of, for example, 150 square meters, that’s 1500 liters. You can figure out for yourself how far you get with 200 liters. That’s a short light drizzle.

What kind of soil does your property have, sand or clay, and how long do puddles remain? Does only your water fall, or do you also get some from the street or neighbors?

Ok, oh well, I will probably have to resort to a cistern after all. When I relate all construction work and costs, including e.g. for a soakaway, it almost only makes sense to use a cistern, if only because all options ensure that the water either seeps away or is stored -> better to store it later in a cistern with 5000l or similar.

Water does not flow from the street onto our property, and our house was also built on a higher foundation slab than is offered as standard. We have no trees and also no neighbors in close proximity.

The soil report for our property states: fine sand "silty" up to 1.40m and then glacial till up to 6m depth. The soil is classified as very poorly permeable and therefore "not insurable" according to DIN 18 130 Part 1.

Then only a cistern is possible, with an overflow for infiltration into the gravel bed of the cistern