You should not be disturbed by the large number of negative replies and members' doubts because Newbie accounts cause many frauds in the forum, so it is natural for members to be careful.
As a new service provider, you must first gain the trust of the community in order for your service to succeed, so you must provide all the guarantees that make you gain the trust of the users.
Positive reviews by trusted members who have tried the service are very important to gain trust.