Got a bunch of apple and cherry that way. Probably helped that we had one mother of an ice storm last December. Lots of downed trees, still seeing ads for free wood. Keep at it, delete and repost your ad every week to keep it up top. Also keep watching the free section for wood offers. I posted my wanted ad in the lawn and garden section.
Maybe explain in your ad that this is for your backyard smoker, personal use and not a business. Folks more likely to help you out if they know it's for your personal use and not for profit.
Two good suggestions you already got. Willing to pay a little or share some great smoked meat with a generous donor