Under current conditions your
Mini 2 is worthless to you; that's your starting point in decision-making.
1. Any decision you make (repair or replace) will be expensive.
2. How soon do you want a working drone?
3. How much are you willing to spend to get a working drone again, or is it better to give up droning?
4. What are the risks of self-repair and what are the costs of such failure?
5. What is the cost and reliability of 3rd party repair?
Owning and operating a drone does have costs and risks, no matter what.
My suggestion is to start the repair process with DJI. There is no requirement to submit for repair if the price is too high. Consider then that purchase of newer drone may really be the best option if you don't want your
mini 2 repaired.
With DJI repair you'll likely get a new drone AND new battery and an offer to purchase 1 year CareRefresh to help take care of future pilot errors.
If you go totally new purchase you could keep the damaged drone for tinkering MAYBE self-repair for a backup drone.