I've made these for TikTok/Instagram:

https://chromewebstore.google.com/detail/video-scrubber-for-...

https://addons.mozilla.org/en-US/firefox/addon/video-scrubbe...

https://chromewebstore.google.com/detail/video-controls-for-...

https://microsoftedge.microsoft.com/addons/detail/video-cont...