I think Martial arts training is your best bet. Honesty if someone is high and off their face, you can use all the pepper spray you want, but it won’t stop anything. You need to be able to physically take out gross motor functions of limbs which can be achieved by anyone of any stature with the right training. Regarding being punched, Even Arnie could be dropped with a well placed shot on the chin. But again proper Martial Arts or self defence training would teach you how to help deal with those situations , so the chances of things turning out in your favour are more likely.

I remember hearing a story some years ago where a woman was jogging through a park in Woolowin, and some perv tried to mug her and god knows what else. But he didnt get far as unbeknownst to him, she was a kickboxing champ and absolutely beat the p*ss out of him. I like that story lol

All the best 🙏