The Prophet ﷺ said: He who asks pardon is not a confirmed sinner, even if he returns to his sin seventy times a day. (Using translation from Abū Dāʾūd 1514)
قَالَ رَسُولُ اللهِ ﷺ مَا أَصَرَّ مَنِ اسْتَغْفَرَ وَإِنْ عَادَ فِي الْيَوْمِ سَبْعِينَ مَرَّةً