I want advice from all veterans here as what best strategy can be for BTC selling. I want to sell at every pump and buy on every dump. How can one make sure he does not lose it.
It's possible to do this, but it requires patience. If you can be patient enough to hold after buying for a long period until a new ATH is achieved, you can sell and wait for a long period again until a price correction occurs or a heavy crash or slash down in price occurs before you enter back into the market.
It's possible, but you can't always be perfect; in some cases, you might sell a bit too early or late, where the price will go up again, or buy too early and the price drops down more, but as long as you buy below what it sold earlier and sell above your purchasing price, then you are making a profit, and that's all that should matter.
I don't really think this is all about being a patient dog. Op is looking for a way to know when to sell Bitcoin and when to buy. This can be possible if he knows how to read the market. Just like the Forex market, every traders in the market need to know how to read charts with a great understanding or have something that will be telling tell when to buy and when to sell, just like trading signal.
Understanding both fundamental and technical analysis is what op needs to know the best time to buy and the best time to sell. There is no no room for buying or selling mistakes. This has been the major problem of many holders and traders because they don't know the best time to sell and to buy due to lack of understanding of the crypto market.
For op to be able to buying and sell at a gold level, he would have to learn how to read the market so he can be making decisions in his own without external bodies that will be available for signals and market predictions.