Report comment

Hi PramSatria, It looks like you have set up the hotspot ok but look at it seems your wifi adapter uses the Realtek RTL8188EUS chipset which is not compatible with hostapd and the nl80211 drivers the raspberry pi uses.

There is an alternative version that is available on github that you can try, in theory it should be fine but it is not tested with this setup. Search for hostapd with RTL8188 ,

Just to check, in terminal enter; sudo systemctl status hostapd
there should be green text that says running(active) if it says inactive or exited then hostapd has failed which is why you can't find the hotspot. The messages may give you a clue to the issue.

do the same with dnsmasq; sudo systemctl status dnsmasq
this should also say it it running(active)
if both say active then let me know and I will look into it further.
If you can also try borrowing a compatible wifi adapter to check that it is your adapter and not the setup issue.