I almost got jumped by a gang.
That sounds scary! What happened?
I mistakenly walked into the wrong place and they were just waiting there.
You should be relieved that you avoided being attacked. You need to be more careful out there!
I can handle myself.
It's good that you are confident that you can keep yourself safe, but when you are severely outnumbered, you are going to struggle to be safe. It's best to simply avoid scenarios like that in the future. If you get jumped by a bunch of people, you can be severely injured or even killed!