Agreed mostly, if you’re going to use AES, make sure it is AES-GCM. However, more people seem to be advocating for XSalsa20-Poly1305 these days. Use libsodium or NaCl bindings if you can. Write the least amount of code to interface with existing battle tested libraries.
If you find yourself actually implementing algorithms and you’ve never done it before stop. You’re 100% likely to do something incorrectly and your system will be insecure.
