Bugs are not only related to memory and a program cannot be considered safe Just because it got rid of pointers, malloc and free.

If you really think that switching language is the main driver to get safe programs, the you are on the list of people replaceable by LLMs.

Othewise you have to understand that architettural chioces, concurrency, (weak) cryptographic function and user stupidity have a significant impact, no matter what language you use. Memory management is just a part of the problem.