1998 Mitsubishi Lancer Removal of battery caused problems

Electrical problem
1998 Mitsubishi Lancer Two Wheel Drive Automatic 160000 miles

Good Day Experts,

I removed my battery terminals in the following order negative then positive and I installed the terminals in that same order. When I did that the car would shut off every time I came to a stop. I did some research and I realised that I put the terminals in the wrong order. I then proceeded to remove negative followed by positive and then install positive followed by negative. The car still wants to shut off by the way it is tumbling. Can you advise me on what to do. Thanks in advance