On the subject of garden lighting there are basically two reasons that can push you to place light points in the lawn, among the shrubs or under the trees. The first is of service and serves to shed light on walkways and differences in height to make them passable and safe. The second, on the other hand, is aesthetic and aims to add interest to the garden by creating suggestive nocturnal views.
In both cases, the first tip is not to overdo it. There is already a lot of light pollution and the beauty of the night is to see the stars in the sky, not the plants illuminated by day. And if you need a lot of light for an evening in the garden with friends (a very good reason) there are lamps, spotlights and removable light points that, after the party, can be dismantled and put away.
THE'Service' garden lighting
The ideal is to create the service light at the same time as the construction of the garden. It is the only system to provide appropriate and stable lighting for the differences in height and paths between the house, the gate, the parking space and the swimming pool. Also because for this type of 'structural' lighting, cutouts and wells are needed which are better not done when the garden is finished. And that maybe they can be integrated into structures such as steps, columns and walls of the swimming pool. Usually this type of lighting is connected to the electrical network and you can only start from a technical project with a good electrician who certifies safe wiring.
'Aesthetic' garden lighting
Here the discourse changes and we talk about decidedly softer lighting. The aim is not to control the areas around the house or the safety of passageways, but rather to create charm around a tree or a scrub of shrubs, or to serve as a simple step marker. In this case the light points can be added even when the garden is already done, indeed it is better because in this way you already know which corners to enhance. And there is no need for wiring because, to simplify the work, you can use light points powered by solar panels that do not require wires. And perhaps incorporating motion sensors that can increase the light when you pass by, so as to be a little service light.
If what you are looking for is a garden path marker (minimum light) you can try this one Solar powered LED while you can learn more about the technical part with the article on brilliance
To create charm among the vegetation I would like to point out this one instead floor solution with motion sensor