In Sweden, your spouse cannot prevent a divorce by avoiding you or staying away. The Swedish legal system allows for the initiation and completion of a divorce even if one spouse is absent or uncooperative.
If you file for divorce yourself, the district court will first attempt to serve your spouse with the divorce application. If the district court is unable to serve your spouse, it will appoint a trustee who will represent your spouse. The trustee will also attempt to contact your spouse, but if these efforts fail, the trustee will request a consideration period. After this, the trustee can take no further action. If you apply to finalize the divorce after the consideration period has expired, the court will grant you a divorce even if your spouse remains unreachable.
Therefore, you can obtain a divorce in Sweden even if you do not know where your spouse is or if they are deliberately avoiding contact.