If your a woman, Remington shotgun in 20 gauge 20 inch barrel. Youth models work well for women. #4 shot or so depending on area of fire.
If not Remington then any pump shotgun in 20 gauge (20 inch barrel) will work. Find someone to teach you. Practice makes it work.
Oooh - ‘Pump Action’.
Aren’t they the kind that can be very noisy? I’ve always wanted a loud, noisy gun - it would probably intimidate that ‘home invader’.
https://www.thetruthaboutguns.com/dont-rack-a-shotgun-to-ward-off-bad-guys-guns-for-beginners/