first check what you really need, more clicks or more sales. cheap clicks are easy to get but they can be completely useless
i would test 3-5 different creatives with different first lines, images or short videos. change only one thing at a time so you can see what actually helped. vertical videos usually work better for reels and stories, but the first 2 seconds need to show the product or problem fast. also check the landing page because sometimes the ad gets clicks but people leave because the page is slow or doesnt match the ad
outside paid ads you can try organic reels, small creators, useful posts in niche groups and retargeting people who already watched your videos or visited the site