An "avoider" is a person who tries to stay away from or escape certain things or situations. They try to avoid or keep distance from things that might make them uncomfortable or worried. Full definition
He will need to do more to go after the rich tax avoiders who cost us more than # 25 billion every year. (politics.co.uk)
In his most tender performance to date, Colin Farrell plays a man who's open to suggestion, a conflict avoider who — ignoring the tragic precedents of his young life — just wants everything to feel good and right with the world. (grouchoreviews.com)
Ummm I am the classic avoider of conflict. (goodtherapy.org)