Well Sonic 3 and Knuckles is on sale atm, so you could at least buy it at that price.
Dr. Eggman’s (AKA Dr. Robotnik’s) Death Egg was once again blasted by Sonic, crash-landing on the peak of a volcano on the Floating Island. Dr. Eggman is still at large, and Sonic can’t allow him to get his hands on the Master Emerald and repair the Death Egg. Sonic must also keep Knuckles off...
store.steampowered.com
Furthermore, if you can just install steam on your chromebook, buy the game, download it then you can at least have the ROM files for use with any emulator or for playing on your phone etc.
I mean come on, ain't nothing wrong in testing out if your wee ol' Chromebook could run an emulator for a 20+ year old console.
...unless it's one of them ancient Chromebooks, but hey if I could run a PSOne emulator in my ye olde Win 98 laptop back in the late 90s, I'd say you likely have a good chance with an MD emulator.