Selling some stocks for a loss and then DCA into index funds?

I’m sure a lot of people are stressed out about being down in a lot of stocks, such as META or PYPL etc.

Does it make sense to just sell for a loss, and then allocate that money and DCA into index funds like SPY/VTI? The chances of index funds performing well in the long term seems way more predictable than individual stocks like META or PYPL. So what’s the point of holding onto losses in stocks that crashed so much? At this point, it seems like DCAing into SPY (selling for a loss first) has a much better chance of recovering my portfolio than holding onto those individual stocks

And isn’t it better mentally to do that? Rather than holding individual stocks that just keeps tanking and tanking? Just transfer all your losses and DCA into SPY, and just forget about it, rather than keep freaking out all the time.