programming language developers always made compilers to just do that - compile the code. without actually checking the code for problems and allowed programmer

programming language developers always made compilers to just do that - compile the code. without actually checking the code for problems and allowed programmers to write faulty code. and now we have accepted these memory leaks and shooting oneself into one's foot as normal. so instead of investing time to make compilers output safe programs we had to wait for rust to come by and its "first time in history" compiler while it limits the programmers tremendously to do that along with the ugliest syntax ever invented. when a programmer looks at faulty code, the bug can be seen. sometimes easily, other time not as easy but it can be identified nevertheless. that means we, humans, can detect them. so why can't programs do the same while having way more computing power at their disposal for that particular task, along with language definition and type system? everyone keeps writing new languages and trying to reinvent the wheel in blue, red, purple color instead of solving the actual problem.