$ETH Newcomer asking everyone. May I ask how to operate a rollover?

Let me first explain my question:

Right now, if I increase my position to increase my profit, then my average price will be pushed up, and the liquidation price will also rise, so I need to add margin to ensure the safety of the liquidation price. However, if I do not increase my position and add margin, the fixed opening amount will yield limited profits. Therefore, theoretically, how should I operate to amplify profits through rollover or compound interest?

If I close all positions, I won't be able to get a good opening price. If I don't close, I'll have to keep waiting for a rise. The fact is, under normal circumstances, it's impossible to keep rising all the way, so what should I do, or what is the correct operation? I humbly accept explanations from all the seniors!