@andrius1 - I know exactly what you are doing or intend to do - because that was also exactly what I wanted to do.
I did that a few times, months at each time, while I was working and found that it will not work. I would place a trade and waited and waited and it finally did when I was either travelling, on vavcation, or in a meeting and when I became free, it was all over and sometimes, even worse, it reversed and turned a big win into a loss.
I also ventured into trading options and the time aspect was even more compressed! It is for full time trading only.
Trading virtual assets(VA) AKA crypto-currencies (CC) is 24 / 7 and watch out for exchnges going down when trading is hot - Binance went down for hours once when I wanted to transfer and trade and I totally missed out ...
If you want to trade for a living or just for extra income, I would do options trading and /or ForEx as they are more reliable and less subject to manipulation.
I have good experience with trading SPY (ETF for S&P) due to the liquidity and low spread trading.
VA / CC have very thin trading volumes especially the alt-coins and thus, the spread can be large. Also, there might be issues of time delays in moving / transferring.
All the best!