97’ mr2 sw20 randomly dying

I’ve had my mr2 for about a month and a half and everything has been running smoothly till one day it just wouldn’t start. I jumped it and turned it on and it was working fine but when I was driving home I pull the clutch in and it died on me. When it dies, the accessories won’t even come on. I took my alternator out thinking that was the issue but after I got it tested it was fine. I also tested my battery and it’s fine so I’m not sure what’s happening or if anyone has experienced anything like this.