Getting a lawn level for me is rake, heel walk, rake, heel walk, rake,,heel walk, rake. Boring but effective. You cannot overdo the raking prior to seed sowing. Raking at different angles too. Finally a home made "lute".....a plank fastened to old broom handle and triangular supports on the head helps with levels.
"level" for me is not about using a spirit level. It's ensuring a smooth, even surface.
Raking is an art I think....probably more of a (minor) skill. It's not about moving large amounts of soil with long powerful "pulls". Back and forth, keeping rake level and light ESP at later stages when it's all about acquiring a fine tilth