How to improve PowerPoint skills

Hi all. I’m a new consultant and I’m awful at building decks. I’ve tried the LinkedIn trainings but they don’t help since they’re too basic. I need to build professional slides that don’t look super basic/boring? I pivoted from another career so I have no skills lol. I work for a consultant so I don't have the same resources as someone who work for a firm :(

Stylistic/formatting tips and shortcuts/tricks are needed! Im painfully slow 😭 What do ya all recommend? Ty!!