wireless - wlan0 not showing up in ifconfig/iwconfig

ive tried all the other threads and nothing is working. im very new and need help. im trying to use reaver and when i attempt it says [-] Failed to retrieve a MAC address for interface 'wlan0'! so i do ifconfig and get (running internet off phone)eth1: flags=4163 mtu 1500
inet 172.20.10.3 netmask 255.255.255.240 broadcast 172.20.10.15
inet6 fe80::250d:ea01:c7e:b2f5 prefixlen 64 scopeid 0x0
ether de:0c:5c:ab:f3:29 (Ethernet)

RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eth2: flags=4163 mtu 1500
inet 100.120.168.140 netmask 255.255.248.0 broadcast 100.120.175.255
inet6 fe80::51e1:4e13:b623:444b prefixlen 64 scopeid 0x0
ether 00:ff:ca:58:32:ea (Ethernet)
RX packets 0 bytes 0 (0.0 B)

RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73 mtu 1500
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x0
loop (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0

TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

iwconfig

eth0 no wireless extensions.

eth1 no wireless extensions.

eth2 no wireless extensions.

lo no wireless extensions.

wifi0 no wireless extensions.

wifi1 no wireless extensions.

wifi2 no wireless extensions.

PLEASE HELP ME GET MY WLAN0 BACK