wanted to ask some stuffs regarding buying fiverr reviews

Guys, is it really worth it to buy fiverr reviews?
Does it help in ranking gigs?
and will there be any problem after buying such reviews?
And is it okay to buy reviews on new fiverr account and new gig?

please clarify if anyone has got experience regarding this..

1) as a customer, they always prefer if there are already some good reviews
2) yes
3) i didn't face any issue but it's always blackhat, you need to know there is always some risk
4)if it's a new account i would wait some time