First of all, please invest what you can afford to lose.
From my point of view NKLA is a perfect example of why it is a good thing to not falling in love with stock/company.
Since December 20th, 2020,
Buying when RSI is at the bottom of RSI bollinger(lime vertical color) and selling when things are opposite (red vertical color) works well.
I completed 2 trades already and last buy is underwater for now.
January 2022 - Buy
March 2022 - Sell
July 2022 - Buy
August 2022 - Sell (this one was great)
January 2023 - Buy (but I f...d up on this. Bought at 4 and DCA'd. My average is 3,23 now.)
Still holding. I would not care even if the company is over because i invested what I can afford to lose.
Hope It helps.
P.S: Weekly EMA 50 is also a good point to sell this stock and stay away.