Blender Bob | How to make an autumn forest, or any forest for that matter, in Blender... @BlenderBob | Uploaded 2 years ago | Updated 1 hour ago
It's fast, it's easy to do and it looks cool. Plus you will learn a nice trick for dealing with heavy files.

Trees:
turbosquid.com/3d-models/3d-2021-pbr-field-maple-collection-acer-campestre-1756939#b3d

Lodify
github.com/DB3D/Lodify

Inspiration
youtu.be/HOR2ZQryTmU?t=379