My first try with Lumen

Sorry If i answer now i’ve been away from hme for 4 months for work reasons,

so correct me if I’m wrong please in this way I won’t lose much time tryingt o figure it out, if I want to light a room using only indirect lighting (for example a light that points to the ceiling or to a wall) lumen is not working right, since it’s partially screen space?
Am i wrong? Should I continue using static light?