Just to be clear, using social media to share videos may get you extra views and exposure short-term but not a sustainable strategy to get big. It might actually hurt your progress. The user views you get from FB, IG, Tiktok, and other short-form social media will have attention span of 5 seconds. It will likely wreck your average view times sending negative signals to YT that they should NOT further recommend that video because people are bailing out. The exception to this might be YT Shorts because it is short-form.
The most I will share on any social media account is a link to my YT channel. But no way I will be blindly sharing/spamming my individual YT videos. I want my videos to be recommended by YT and by those who are playing in the YT and Google ecosystem. I cannot have a bunch of outside people (non-YT viewers) who have attention spans of 5-seconds come peek my video and then bail out. Not good for my average view times, the algorithm, or having YT recommend my videos.
You want to encourage views coming from Suggested, Browse, and YT searches. YT does all the work for you when you do your part.