For me there are 2 main tips that I can give you. First is being discipline and having patience, trades are not always gonna be a win for you learn to control your emotions and have patience for each trades you do. Second is know when to stop loss and take profit. Always set a mark for stop loss to minimize losses and set a reasonable price mark to take your profits. Don't be greedy to aim for super high % profit.
That's right and not being greedy is as important as anything because the crypto market is so funny that today the same coin might make you millionaire while tomorrow it might drop and make a billionaire a beggar so cash your profits as soon as you see the opportunity.
I also think that while emotions, greed and panic sell are important factors but one must also learn the basics of trading because no matter how strong you are and how quickly you cash the profits without being greedy but all these things happen when you actually learn trading and understand how to read charts and what is technical and fundamental analysis for a coin.