Tell those local businesses that you really want to support and follow them, but that you boycott Meta and the reasons that you do.
Honestly there's so many reasons businesses should also avoid Meta, like the fact Meta is literally collecting and selling their most valuable business data about their customers to other competing businesses. Tell them for their own good that Meta is not their friend, it might help them at first to get exposure, but only long enough to get that data and sell it off to a bigger fish.