@Nafeesah As pointed out by @Francisca_Chiedu that your evidences are mostly based on references/recommendation and often times the GTV case officer rejects endorsement mentioning that not enough evidences provided outside LORs. You need to find a balance of evidences that consist of LORs, online (publicly accessible) links, news articles, etc.
You can take a look at how I arranged my evidences to get some ideas: This is how I got my Endorsement for Global Talent Visa under Exceptional Talent Route (AI/ML Researcher)
But do go through this Forum as there are many successful applicants who have shared their cases as well.