Evil Twin Attack Problem

Hi guys

this is my first post pleeeeeeeease help me ;(

i have a problem in do a evil twin attack. in some tutorial said that we can use Dhclient to use modem DHCP to set IP on victim but this method sometimes work and sometimes doesn't work.( i do not know why but i am sure i did all mentioned steps correctly.

i tried to run a Dhcp server on my Kali Linux but the related package (isc-dhcp-server) can not install on my kali machine. i tried to change the source.list file, also i used apt-get update command but the problem did not solved. please help me to do a complete evil twin attack.

** i use Alfa AWUS036NH to perform the attack

at the end sorry for my poor english ;)

thanks alot.