Many people who trade can’t even tell the difference between left-side and right-side trading.
They’re also unclear about which time period they’re actually trading.
They use signals from a small timeframe to try to battle the market on a larger timeframe;
then they use a large-timeframe mindset to agonize over the up-and-down fluctuations of the small timeframe.

If you can’t distinguish the timeframe and don’t understand left vs. right, entering trades becomes very blind.
Some traders prefer to set up positions early on the left side, taking the stress of oscillations and pullbacks;
others trade only after right-side confirmation, giving up some early profit in exchange for certainty.

There’s no absolute right or wrong, but you must be clear:
Which timeframe are you trading? Are you doing left-side or right-side trading?
When timeframes are mixed up, trading easily loses its rhythm.