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.
Thank you for your clarification and advice!
For sure - I'm asking some users to write a comment here. BTW not all of them want to do it and most of them are newbies (as me) on this forum. We will succeed for sure!