There are three types of pauses: silent pauses (no sound), filled pause (filled with ums ahs etc), and breath pauses. Consider consciously taking a diaphragmatic breath, so that’s its not really obvious, at key points in your presentation, such as when you change slides. In addition to giving time for your audiences to think and you time to think it can have positive effect on public speaking anxiety (Kimani, Shamekhi & Bickmore 2021). We also know that this type of breathing can be effective in helping us to think more clearly even if anxiety is not present.
Kimani, E, Shamekhi, A & Bickmore, T 2021, ‘Just breathe: Towards real-time intervention for public speaking anxiety’, Smart Health, vol. 19, 2021/03/01/, p. 100146.