All Christians are not called to be evangelists.
”It was he who gave some to be apostles, some to be prophets, some to be evangelists, and some to be pastors and teachers…” (Ephesians 4:11). So don’t feel guilty if you’re not out their evangelising. That, Christian, however, does not mean that you should not look for opportunities to share your faith.
Although all Christians are not called to be evangelists, they are all called to be defenders (apologists) of the faith: ”Always be prepared to give a defence (apologia) to everyone who asks you to give the reason for the hope that you have. But do this with gentleness and respect…” ( 1 Peter 3:15).