Yeah but... Okay on another thought my "strategy" here may be better served only during a bear market where things are down and dance 10-20% day in and day out.
During a bull market its kinda fucked because you can end up getting stuck with something you overpaid for for a long, long time.
But when everything is down, and it probably wont go much downer

it should work.
I was just about to ask this same question you did because I've been thinking about this a lot the last few months. I don't know shit about the companies and people behind the coins. All I do is watch the market trends and I noticed it too. It's always going down by 20% and then about a month later it goes back up by 20% give or take. So it occurred to me, why not just buy when they are all down and then sell it off when they go back up and repeat this process. The more money you invest, the more you make back but of course the fear is always that if you put in too much money and something shitty happens and you lose it all.
But here's a few good examples. Cardano is a legit and solid coin. It's not going to just go to $0 next week or next month (99%).
So if Cardano's low is around 80 cents the past couple months and it's high is about $1.25 then when it hits the low 80s, why not buy up $300 or $400 worth. Then when it goes back up to $1 or $1.15 in a month or two, sell it off and keep your profit of about $75 or so. Then just wait for it to drop again to low 80s and buy up some more.
I kept track of other coins like Avalanche which hits lows of 60s and then hits highs of $1. Could avalanche hit 10 cents or 20 cents again? Sure, but not likely. It's going to keep bouncing between this 60 cent low to $125 high range and maybe eventually even hit new highs. Same with Solana and few others.
So right now, I was thinking the best time to buy Cardano is now. It's back to low 80s. I bought it a month ago at mid 80s and sold it off at $1.07 and took a small profit cuz I only spent like $200 bucks or so on it. But now it's doing it again so I bought another couple hundred bucks worth of Cardano and I suspect in a month or less, it'll spike back up to $1 - $1.20 range and you sell it off again.
Matic used to always bounce from $1.40 to $2.15 every month or so and it did this several times! I kept track of it but I never bought it until recently. Unfortunately Matic hasn't been bouncing back to the high $1.90 ~ $2.25 range the past couple months. It last hit over $2 back in Feb 9ish so I had bought a few hundred bucks worth of Matic at around $1.45-$1.70 waiting for it to hit $2+ and sell it off but it's been a longer wait than I expected.
Same with ALGO. Algo was always bouncing around low 60s 70s and hitting high 90s and doing this a lot every few weeks. It's very low right now but I'm thinking it's bound to hit the 90 cents to $1 range again as it always does.
I went off the board a bit and decided to buy up some CELO. I noticed that CELO is at around it's lowest right now but at $2.74 it looks like it's going to eventually bounce back to it's usual $4 to $5 range as it does this every few months. So just buy a lot of CELO right now and wait 3 or 4 months and watch it hit $4-$5 again (double your money). So if you put in $200, then only $400 (+200) but if you are more daring, put in 10K and get 20K (+10K profit minus fees).
I think we are thinking about the exact same thing and I'd be interested to talk to you more in DM. Actually, I've been wondering why more people don't actually talk about their results and share. It's like people are scared to giveaway their 'secrets' or 'winning formula' OR they really aren't sure so they don't want to say anything. Of course, I don't know anything either and can't guarantee any of this works but on paper, it does keep dropping 20% and bouncing back 20% so why not buy it up during bear like now, and sell off in a month when it gets bullish at +20% up. Then repeat this again when it goes bear.
Another thing I'm interested in is the people who have made claims or predictions and keeping them accountable to their word. Then over a period of time like 1 year or 2 years, we can actually see which people have a good track record of being right and which people pretty much are unreliable and got everything wrong 99% of the time.