Hello @ifitsus, I am sorry to hear about your experiences here. There are some methods you can use that may increase your chance in finding a better candidate for your next project(s):
1.) Do not use the Buyer’s Request
While there are legit new sellers or no-review sellers who are genuinely qualified and charge a low sum of money for their work, a vast majority of them are pretty desperate and would do anything to secure a gig; and desperate people are usually unwise in gauging whether they have the means and time to deliver the project on time. You can browse the listings instead to see if you can find someone with the expertise you need who preferably have several ratings and reviews under their belt - which brings us to the next point.
2.) Do not choose the cheapest service provider(s)
While, again, there are people who will short-sell themselves due to being new, I personally do not trust people who have been around for awhile and still charge $5-10 for their gigs; unless their project has some kind of a limit and they charge $5 for very simple task(s), such as coming up with a concept or consultation fee for the real project itself. Then again, having someone with several 5-star reviews who charge more than $10 is still not a guarantee, which brings us to the last resort.
3.) Hire Pro sellers
If you have done Point 1 and 2 and still not satisfied with the finished products, you might want to consider Pro sellers who are vetted through by the staff and already are professionals in their field before joining Fiverr. They will charge way more than regular sellers, but you will almost always get what you want barring any personal preferences.
Bonus: Manage your expectations
If you do not want to pay the sum requested by Pro sellers and are constantly dismayed with the results you get from cheaper sellers, perhaps it is time to manage your expectations. Be kinder and more understanding if you hire someone who genuinely needs an extension. Do not expect perfect deliveries if you know your deadline is very tight. Consider being very simple, clear, and direct with people who do not speak English fluently, etc. If you manage your expectations well enough, you will not feel very disappointed at the end of the day.
Hope these pointers help.