Question about the buyer request

[dreamdesigner60]

Hello i am new on fiverr i got some buyer request and i reply them in short time but they didn’t get back to me. I want to know am i doing some thing wrong in replying them back or late reply is a routine practice.
Need serious suggestion.

[imagination7413]

Speed isn’t important to replying.

Please see:
. READ, People! Be original!
. Buyer's Request: 39 Offers, Should you bid ❓
. [GUIDE] How to write actionable answers to buyer requests