He barely lost the popular vote, and in the end the electoral college decides. It's complete denial to act like it was a landslide. Even if you agree the electoral college is problematic it was a bad election.
If you don't want to think about the electoral college, the popular vote has to be a landslide, not what it was in 2016.
You can even look it up and this isn't even the first time this has happened. it's the 4th time. It doesn't even get the most blatant discrepancy
Votes matter but you also have a system in place, and if you're necking the 50/50 vote point expect that system to matter. Going to lala land and imagining a system that isn't how your system actually works doesn't fix anything.
Get more people to vote
Discourage 3rd party bait picks that will never get elected because they don't even have a local/state/anything presence
As an added bonus, you'd probably need to get people more interested in house/senate elections if you actually wanted to do anything about the electoral college. Cause it's not being changed at the presidential level.