The A50 uses an AMOLED display which translates to, you can’t do glass only repairs, you have to replace the entire screen. Just be aware that when you change the screen on some models, I believe it’s the A50 and A70 models, it will disable the fingerprint sensor for “security purposes” according to Samsung. In order to restore it, you’ll need a special programmer that only “authorized” Samsung service providers have access to.