My Dakota isn't moving when I switch it to any gears and press on the gas.

What is your question?

Recently while I was driving my drive belt had broken, belt tensioner had also was bent, and after I replaced everything. I had a neighbor look at it when it wouldn't move no matter what gear I put it in and said it was the transmission. Should I get a new transmission or a change or flush?

What makes this problem better or worse?

It just won't move so worse

How long has your 2002 Dodge Dakota had this problem?

A few days