Some Christians are jerks. And it turns people off. You’re never going to convert anyone by screaming at them.
John 15:6; 1Thess 1:4; Jer 1:5; Col 3:12-13; Tit 1:1; Pro 16:4; 2 Tim 1:9; Eph 1:3; Gal 1:15-16; Eph 1:4; Matt 24:31; Lk 18:6-7; Ro 8:33; 2 Thess 2:13; Deut 7:7; John 6:44; 1 Pe 1:18-20; Eph 1:11-12; 1 Pe 1:1-2; John 6:39; Acts 2:23.
2. Every living soul knows the truth. They choose to reject it. (Romans 1:18-to the end of the chapter).
3. The testimony of history, creation, and logic screams at the unrepentant to repent (repent = change your mind; from the greek word, "metanoia"). As we find ourselves in 2021 After Death (AD), Ro 1:20, the writings of Josephus, and andrewcorbett.net is a good start.
4. If they don't recover their minds, then they go the broad way unto destruction like most. Jesus said it was narrow:
Matthew 7:13-14
"Enter by the narrow gate. For the gate is wide and the way is easy that leads to destruction, and those who enter by it are many. For the gate is narrow and the way is hard that leads to life, and those who find it are few.
To your point, I don't know why Christians scream. There is no need for it. Everything is laid bare before them.
you are pre-supposing some things there.
BTW - nobody is perfect - except God.
So don’t blame your actions on what someone else did (or did not) do. That is just giving them control over your own life.