That might be confirmation bias. I know lots of people who use bots effectively. If you didn't start with a bot, and became a good trader you most likely do not need one, even so people who understand Python, TA Lib, Pinescript (Trading View's native script) are able to automate their successful setups and do much more than manually trading. The question you have to ask yourself is, do you have the time, discipline, willingness to want to daytrade? 95% will not, and they will fail miserably doing so. I learnt so much from using the likes of Profit Trailer and Gunbot and will say both made me a better trader because I sat for hours learning what they did as well as reading about successful trading strategies used by pros, essentially my method is a hybrid where I setup Profit Trailer to mimick the way I would like to trade. I've had winning trades of huge profit margins overnight when asleep 4am, 5am etc when the Asian markets opened which I could never have performed physically.

If you are a beginner I suggest you learn fundmental TA skills, read about Wyckoff theory, get a free trading view account, and then look at reviews like I've written bout Profit Trailer and then ask yourself, what do you want to achieve, how much time do you have, what toold might help you, that's what I did, and made a lot of money doing so.