Play for the first audience, then for search
A new video is tried with a small group. If they watch it through, replay it, or share it, more people see it. That is the whole "algorithm" in practice. A watermark from another app, a recycled clip with no new angle, and a slow open all make that first group leave.
Search on TikTok is a second door. Say the thing people would type: the game, the problem, the gear. Longer videos can work when the idea earns the minute. LIVE and studio tools are extras on top of a video people already want, not a substitute for one.