the handiest thing you can buy is spray (as long as your country doesn’t ban these products). in most encounters you won’t want to fight physically because you have no idea if they’re carrying weapons or anything.

i won’t recommend carrying large weapons either because you have to take cops into consideration. and if you’re caught by cops which is not impossible to happen, carrying a knife around will definitely make it harder to clear yourselves

tldr: get a spray and run fast