Yes to video, with scope honesty: your phone is genuinely enough (stabilize it, film horizontal for YouTube / vertical for Shorts, buy a $20 mic. Audio quality is the amateur tell, not the camera). The 80% of video value costs $50 of gear and the willingness to talk while working.
First four videos for any service business: the 'what we actually do' walkthrough, one satisfying job start-to-finish, your three most-asked questions answered straight, and a real customer story. Length: as short as the substance allows. 60–90 seconds for social cuts, 3–8 minutes for the YouTube versions people actually search.
The compounding trick most miss: YouTube is a search engine. Title videos like searches ('how much does a panel upgrade cost') and each becomes a permanent salesman, unlike the feed posts that die in a day. One filming afternoon per month sustains the whole program.