I keep falling into old sins (nothing insanely major) recently and I really fear being misguided by Allah as I keep falling into this sin. I’ve made tawbah over 50 times everyday and I feel disgusted with myself and harsh on myself for this. I don’t suffer from waswas but do you have any advice?

Repentance is accepted however many times it is broken, if it is sincere, and the fact that it still disturbs you is a sign of good in you and not of ruin. Cut off what leads to it, keep righteous company, fill your time with obedience, and do not be harsh on yourself, the shayṭān only wants you to despair.