Hii!!
im designing a childcare center and dont understand with my is too big. I have included simple geometrty and barely added 3d warehouse objects (those added didnt reached the 1 MB). How can i solve this?
Without inspecting your model, I just think out LOUD …
Did you use (8K) materials or photos in your model that are very large?
Did you model your arcs and circles with the maximum amount of sides instead of 24?
Did you model on an alien scale like 999:1?
There can be so many rasons why your file gets to large for sketchup to handle.
Please, if possible, share your model so people can inspect it 
too big for what ? to upload somewhere ?
a 17mb file is too big for direct upload to the forum.
a 40mb file is too big for a gmail attachment.
a 100mb file is too big for a sketchup web upload.
you’ll have to be more precise, and maybe attach your file here ? (directly of through a wetransfer of some sort?)