What is the way to achieve psychological comfort and overcome continuous unhappiness, along with the fear of despairing of God's mercy? And is what the questioner is experiencing a test, or does God dislike her?

This worldly life is a house of trial, and patience in its afflictions is good in this world and the Hereafter. Affliction does not mean Allah's hatred for His servant; rather, it may be for the expiation of sins and the raising of ranks, for when Allah loves a people, He afflicts them. Supplication has manners, conditions, and impediments, and one must beware of hastening the response and despairing of Allah's mercy. The acceptance of supplication does not mean obtaining the exact request; rather, Allah might avert harm through it or save it for the Hereafter. The true calamity for a Muslim is in their religion, not their worldly life, for this world is fleeting, while the Hereafter is better and more enduring. Humans are immersed in countless blessings, the most important of which are the blessings of Islam and faith, and they should be content with what Allah has allotted for them, and they will be the richest of people.