Over the past 3 years, I have seen a huge number of signs and you know what? Almost all of them turned out to be fake -snip-
A huge number of signs? Can you mention some of them, buddy? 
For me, so far only halving that I think can be the real sign of bullish. It makes sense because we can see the previous history of Bitcoin halving that could bring significant influence in Bitcoin's value. Just checked out the halving history : hackernoon.com
-snip- Bitcoin does not care about logic, it goes its own way, which is impossible to predict. -snip-
Not really. We can see the historical data of the Bitcoin price movement. And from the data, we can predict a bit about the possibility of the next prices. Even if surely there is no guarantee of it. - First halving, on November 2012 : Bitcoin increased from $11 to $1,100 in 2013 (one year later)
- Second halving, on July 2016 : Bitcoin increased from $600 to $20,000 in 2017 (one year later)
- Third halving, on May 2020 : Bitcoin increased from $6,000-$8,000 to $??? in 2021 (one year later)
- Second halving, on July 2016 : Bitcoin increased from $600 to $20,000 in 2017 (one year later)
- Third halving, on May 2020 : Bitcoin increased from $6,000-$8,000 to $??? in 2021 (one year later)