Each day for seven consecutive days, Moshe Rabbeinu assembled the Mishkan, sacrificed the burnt offerings, and took down the Mishkan. All were awaiting the Shechina to come down as a sign of complete atonement. Finally, on the eighth day Aharon HaKohen offered the sacrifices. The Shechina had descended to dwell among the Jewish people. They had received their atonement.
Nothing can prevent a person from doing teshuva.
The sinners among the Jews committed the three worst sins, and they received kaparah . How much more so those who commit lesser sins are capable of doing teshuva and receiving kaparah. We all make mistakes. Hashem put us in this world to fix ourselves up by correcting our mistakes. Each mistake is an opportunity for teshuva .