We all have our demons too, I could have listened to them, saying, sell, sell, sell, you dummy, this thing is going to die and you will lose all your capital.
I believe it's a good thing to have grown with Bitcoin all this past years and have grown the confidence to hold through any weather, Bitcoin have proven itself to be the best solution to decentralization.
You are not too late, you just find the reason to keep supporting Bitcoin, to keep holding your Bitcoin bag. My confidence in Bitcoin is now 100%.
Manipulation exists in every market, but I agree that the crypto market is much different regarding this point due to the lack of regulation. In fact, the manipulation in the crypto market happens on both sides, because there're many entities with different interests, so every entity can manipulate the market to some extent, not as they want. In addition, the news that comes from the USA also affects the market. Therefore, I don't see it as a reason for leaving or selling Bitcoin, because it used and proved to be profitable in the long term, without paying attention to the short term manipulations.
This is the right decision in my opinion. Our decisions should be based on logical facts, and Bitcoin has already proved its profitability in three cycles, so why would it stop being profitable now? Moreover, the total crypto market cap doesn't look like it topped out or reached its highest possible levels, so there are still additional chances for Bitcoin to rise.