God it Durga. I suggest that you try the inputs I shared if you are not already using that. I am assuming that you are doing remarketing for brand reinforcement assuming that's also relevant? You should also consider Gmail Sponsored Campaigns.
Given the objective, I believe you are using other relevant online advertisement channels especially Facebook Ads especially Newsfeed Ads.
You can also consider online ad platforms such as Outbrain & Taboola to leverage content based brand campaigns.
Hope this helps. Let me know if you've any further specific query.