sci hub hasn't been able to upload articles to its servers for over a year now, so if it's a recent paper, you'll have to write the author.
If the author is someone you actively despise for good reason, and you only want to read the paper to hate on it, you can look for it on a free preprint server, or use your alumni email address and password for institutional access. It often works. Might have to log into the campus network.