What to do if I have no trading strategy?

TL;DR: Learn, test a lot.

Working manually until you find your trading strategy is the best way to save your capital.

Perhaps, at first it is worthwhile to study the subject more deeply. And when it becomes clear that aspects of the work could be shifted to bots, start automating.

You can only take bots to indulge or try to use them to quickly understand some common practices, such as DCA, trading within a spread, trailing profit, etc.

In order to find your trading strategy, you need to study all the algorithms and methods of trading, common practices, approaches and strategies; study all the indicators and filters used, down to the formulas for their calculations, in order to understand what is behind; put forward and test hundreds of hypotheses; combine different instruments with each other in different settings.