The contract is a pit, lost three thousand already

As a college student, I entered the cryptocurrency circle less than a month ago to earn living expenses. I recharged 300 U to Binance and learned contracts by trial and error.
At the beginning, I didn't know anything. I didn't know how to recharge, read K-line, and didn't understand why there were so many wallets for fund wallets, spot wallets, and web3 wallets. After more than half a month of trial and error, I officially joined the contract.
During the contract period, I fell into the trap several times and learned a lesson: "Stop profit and stop loss, don't get too excited!" I remember that I shorted a copycat coin at night, guessed the timing of entering the pit, and calculated the approximate exit point. I won 80 U with 20 U in one night. I was very happy at the time. I felt that it would rise after falling to the ideal position. As a result, I continued to go long, but I didn't expect that it kept falling and lost 80 U again. Fortunately, I set a stop loss at the time. During this period, I was immersed in the beautiful fantasy that BTC could reach 100,000 U. On the 24th, BTC pulled back, and the altcoins blew up the first pot of gold I had earned since I started. At that time, I didn't notice that all cryptocurrencies were falling and thought it was just a small shock and didn't set a stop loss. As a result, I received a regretful notice on QQ email. On the 28th, I listened to an old man and transferred the last few 100 or so U to 101U to other exchanges to follow his orders. As a result, it exploded that night, and only 7U was left. Now I only want to rely on myself. Whether I can become a 10U god of war depends on these 7U. If I don't have it, I will quit the pit! In addition, is there any real big brother who can give me some advice? $BTC