This is the only suggestion worth bothering with and the other posts demonstrate exactly why.
If you listened to the squit from the headless chickens running around here you'd be fucked most of the time. If you bought like a robot for long enough you would be sitting pretty, and very, very prettily over the long term.
If I'd attempted to trade or time the market I am 100% certain I would have vastly less than I do now.
Here is the stat that anyone considering getting involved should have in mind and it also applies to many other markets too -

This guy is largely a silly sausage but he nails it here. I have been here long to see hundreds if not thousands of posts from people declaring they've sold all and will not enter until their target low arrives. Then we never hear from them again.
And OP, almost all of your posts seem to be about timing the market too. Your guesswork is little different to all the others you've highlighted.