I'm also beginner in trading. I trade since this summer and I lost about $90 on $120 account. Recently I make $20 on last $34.
Throughout my journey in trading, I read Jack Schwager's book, watched many educational videos on YouTube, read many articles on the educational sections of CEX exchanges, and also talked with many traders. It seems to me that I understand enough about technical analysis, trading systems and trader psychology. But I'm at a dead end and don't know what to do next. Other traders advised me to just trade, but I think that over time I will lose my remaining $45, and demo trading does not bring such emotions and I don’t want to try hard when trading it
It looks to me like you have put in a lot of effort to learn and teach yourself about trading, which is an investment also and way more important than having a big capital. It's normal to face challenges and crashes, especially as a beginner in trading world you can’t learn without experience and knowing your emotions. While demo trading cannot offer the same emotional experience as real trading with your own money, it still can be a valuable way for applying your strategy and winning confidence without risking more money as you already lost the first 80% of your capital.
I advise you to consider taking a step back in order to strength your approach and focus on managing risk effectively. Remember also that trading is a journey and learning from both successes and failures is just a period in your long journey for growth if you want to be a trader. For me practicing is more essential than anything, with time ans experience you will teach yourself as nobody will do to you.