Tesla's stock price has little to do with Tesla going bankrupt. This is about Musk himself. He's heavily invested in Tesla and as Tesla's stock goes down his net worth and power goes down.
What it does make difficult for Tesla is to raise money through investment.
Tesla's problem with all of this is brand damage. Best thing Tesla could do now to recover the brand is remove Musk as CEO. However, as the largest investor he's almost self-appointed.
If they shrink in size, and the EV market becomes "all cars" then they'll be insignificant.