Insulation services marketing tips

I’m an insulation contractor providing residential insulation services. At the moment, my main source of customers is Facebook Marketplace. I’m trying to grow my business, but over the past two months it’s been difficult to generate leads. I’m not sure if this slowdown is due to the Christmas and New Year season or changes in the platform itself.

I’d really appreciate any advice on how to attract more customers. Suggestions for alternative marketing channels or proven lead-generation strategies would be very helpful.