Followed same steps again, don’t know what changed now wifi working 
(I didn’t install driver from AUR)
inxi -Na
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Gigabyte driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s
lanes: 1 port: d000 bus-ID: 03:00.0 chip-ID: 10ec:8168 class-ID: 0200
Device-2: TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU] type: USB
driver: rtl8192eu bus-ID: 3-9:4 chip-ID: 2357:0109 class-ID: 0000
serial: 00e04c000001
This time shows Device-2
ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 40:8d:5c:e4:72:50 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
link/ether 50:3e:aa:88:0e:43 brd ff:ff:ff:ff:ff:ff
4: enp0s20u12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000
link/ether 2e:1c:ff:12:4a:f4 brd ff:ff:ff:ff:ff:ff
Now shows no3
sudo dkms autoinstall
Deprecated feature: REMAKE_INITRD
Same output as before. When checked with live usb it gives no such output.
sudo dkms status
on system the output is
Deprecated feature: REMAKE_INITRD
rtl8192eu/1.0, 5.19.7-arch1-1, x86_64: installedDeprecated feature: REMAKE_INITRD
on live usb it is
broadcom-wl/6.30.223.271, 5.19.4-arch1-1, ×86_64: installed
nvidia/515.65.01, 5.19.4-arch1-1, ×86_64: installed