8188eu on a Raspberry Pi > v.5.10.73

pi_wifi

https://forums.raspberrypi.com/viewtopic.php?f=28&t=62371&start=1550#p1898145
sudo apt install git bc bison flex libssl-dev
git clone https://github.com/RPi-Distro/rpi-source
cd rpi-source
./rpi-source
git clone https://github.com/lwfinger/rtl8188eu
cd rtl8188eu
make
sudo make install
sudo modprobe 8188eu

sudo nano /etc/modprobe.d/8188eu.conf
blacklist r8188eu
options 8188eu rtw_power_mgnt=0 rtw_enusbss=0 rtw_drv_log_level=0

nano wifi_reset.sh

#!/bin/bash
set -x
sudo /sbin/modprobe 8188eu
sudo /usr/bin/killall -v wpa_supplicant
sudo /sbin/ifconfig wlan0 0.0.0.0/24
sudo /sbin/ifconfig wlan0 up
sudo /sbin/wpa_supplicant -B -c/etc/wpa_supplicant/wpa_supplicant.conf -iwlan0 -Dnl80211,wext
sudo /sbin/ip link set wlan0 up
sudo /sbin/ip route add default via 192.168.9.254 dev wlan0 
sudo systemctl restart dhcpdc5
systemctl restart wpa_supplicant.service

sudo nano /etc/network/interfaces.d/wlan0
auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
network={
  ssid="network_ssid"
  psk="password"
}