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Choosing a reference swing
Golf maintains a library of expert reference swings organized by club and shot type rather than by individual player — driver, mid-iron, wedge, each with a stock full swing and a few common shot shapes.
When you upload a swing, match it to a reference for the same club and intended shot type, not a swing you simply like the look of. A driver swing compared to a driver reference is meaningful; compared to a wedge reference, the naturally different plane and follow-through will read as flaws that aren't actually there.
You can browse the reference library directly without uploading anything, which is useful for studying what a specific club's textbook swing sequence looks like before you try to reproduce it.