Psalms 6:4 Come back Yahveh! Rescue my soul; save me because of your covenant faithfulness.
The psalmist feels like God has gone away to a distant place, and is not accessible like he was before. Believers everywhere have felt that.
Sometimes I hike alone, and I generally like it. But after a dangerous rock scramble, or an encounter with a snake or a bear, I feel the aloneness more intensely. I start to reassess the decision to go solo that day.
The psalmist knows that God is always there. He never really goes solo. But he often feels like he is. He is asking God to come back— that is, to make his presence known again. The psalmist needs rescuing. He was never intended to go solo.