You don’t give any details about your project, so it is difficult to advise. e.g. if you are using the Youtube export settings, DON’T, they are not very good and lead to file sizes that are larger than they need to be. Are you exporting at 60fps? If so, try 30fps and you’ll effectively halve the size, for little if no loss of quality.
There are various posts on the forum that discuss Output Quality vs Size such as this one,
These posts have useful informatiion that you might like to try, rather than exporting a video with un-tailored parameters that requires you to use another utility to compress further.