A must watch Kirk Durston video (14 minutes) demolishing the key Darwin predictions. Durston is a genetics scientist:

https://uncommondescent.com/evolution/kirk-durston-on-evolution-and-faith/

His main point, discussed here many times is that breeding for improvement reaches endpoints beyond which only deterioration occurs. Secondly, more bad mutations occur naturally than good ones. So how did evolution go, naturally, from bacteria to humans? The implied answer is not naturally .