Are you stronger today because you failed? Peter denied the Lord three times yet he later wrote.

1 Peter 5:10 (NLT2)
……… so after you have suffered a little while, he will restore, support, and strengthen you, and he will place you on a firm foundation.

I know Satan wants to sift you but remember Jesus is interceding at the right hand of the Father.

Luke 22:31-32 (NLT2)
³¹  “Simon, Simon, Satan has asked to sift each of you like wheat.
³²  But I have pleaded in prayer for you, Simon, that your faith should not fail. So when you have repented and turned to me again, strengthen your brothers.”