True biblical accountability is something we freely choose for ourselves, rather than something which is forced upon us.
No one can make you accountable. You hold yourself accountable. We do so because we recognise the value of it.

Accountability is a tool and a gift we give to one another that we might grow to a place that we could not on our own.

J. Hampton Keathley, III defines the practice and exercise of accountability in the “Marks of Maturity: Biblical Characteristics of a Christian Leader“, below an extract from Mark #16 Accountability:

The Meaning of Accountability, What it is

By accountability, we are not talking about coercive tactics, the invasion of privacy, or bringing others under the weight of someone’s taboos or legalism or manipulative or dominating tactics. Rather, by accountability we mean developing relationships with other Christians that help to promote spiritual reality, honesty, obedience to God, and genuine evaluations of one’s walk and relationship with God and with others. We are talking about relationships that help believers change by the Spirit of God and the truth of the Word of God through inward spiritual conviction and faith.

Being what we are, sheep that are prone to wander, accountability to others is simply one of the ways God holds us accountable to Him. Left to ourselves, there is the great temptation to do mainly what we want rather than what God wants and what is best for others. So what is meant by accountability? We are talking about teaching, exhorting, supporting, and encouraging one another in such a way that it promotes accountability to Christ and to others in the body of Christ, but never by manipulation or domination.