How to find the keycodes for remapping Control and Super keys using xmodmap on X11

I am trying to swap my Super_L and Control_L keys on my keyboard. I determine the keycodes for remapping these keys using xev, showkey, and xmodmap itself. They provide me different keycodes but none of them works when I use them to swap the functionality. I have gone through other posts (e.g. this ) and have tried what has been suggested already. But, nothing has worked out for me. Please help me determine why my key swap is not working. Things to note - * key swap is working fine for other standard keys. * key code are swapped when inspected after remap in xev or xmodmap but their function do not change. * I have installed i3wm on Ubuntu 24.04. * I have a Logitech MX Keys Mini keyboard connected to my system over bluetooth. Keycodes without any remapping:

$ xmodmap -pke | grep -i super                                                                                                                                 
keycode 133 = Super_L NoSymbol Super_L
keycode 134 = Super_R NoSymbol Super_R
keycode 206 = NoSymbol Super_L NoSymbol Super_L

$ xmodmap -pke | grep -i control                                                                                  
keycode  37 = Control_L NoSymbol Control_L
keycode 105 = Control_R NoSymbol Control_R

$ xev | awk -F'[ )]+' '/^KeyPress/ { a[NR+2] } NR in a { printf "%-3s %s\n", $5, $8 }'
37  Control_L
133 Super_L

$ sudo showkey                                                                          kb mode was ?UNKNOWN?
[ if you are trying this under X, it might not work
since the X server is also reading /dev/console ]

press any key (program terminates 10s after last keypress)...
keycode  28 release
keycode  29 press       --------- corresponds to Control_L
keycode  29 release     --------- corresponds to Control_L
keycode 125 press       --------- corresponds to Super_L
keycode 125 release     --------- corresponds to Super_L