Conflict is unavoidable in most of human relationships because each of us come with different values, needs and perspectives. And in most relationships, we have little to no idea on how to handle it.
The most common mistake many people make is that they aim for conflict avoidance. Considering conflict is a major stress trigger, many believe that a lack of conflict is a good sign for a relationship, so often they tend to frame it in fear and frustration.
Absence of conflict is not hallmark of a good relationship. It is a sign of poor communication and only leads to further problems and resentment.
To survive and thrive in any relationship you must know ways to find a common ground to resolve a conflict when others prefer to avoid it.