Don't get depressed about it. Ask for forgiveness for anything you have done wrong and intend to not do bad and be good, and Allah promises to forgive you for anything and everything instantly. Allah says in the Qur'an "O My servants who have transgressed against themselves [by sinning], do not despair of the mercy of Allah . Indeed, Allah forgives all sins. Indeed, it is He who is the Forgiving, the Merciful."
And The Prophet (peace be upon him) said: “Allah, Blessed and Exalted is He, says, ‘O son of Adam, as long as you call on Me, I shall forgive you of what you have done, and think nothing of it. O son of Adam, even if your sins were to reach up to the clouds in the sky, and then you were to ask for My forgiveness, I would forgive you and think nothing of it. O son of Adam, even if you were to come to Me with sins nearly as great as the Earth, and then you were to meet Me after death, not worshipping anything besides Me, I would bring you forgiveness nearly as great as the Earth.’
Allah teaches us that He wants to show mercy to all of us, so keep learning about Allah's love and mercy and be happy. If you think Allah is angry with you, then remember that Allah is the Most Loving, Merciful and Compassionate and you can make sure He's happy with you instantly by asking for forgiveness and trying to do good. Allah tells us to never lose hope in His infinite mercy.
The fact you are worried shows that you really care about pleasing Allah, and Allah will love you for that already
Finally, just because things aren't going your way doesn't mean Allah is angry with you. Many of the Prophets (peace be upon them) went through periods where everything was against them, and Allah helped them to go on and acheive great things and become the best people ever. Don't worry if people make fun of you because many people are nasty and wrong, but Allah will eventually give you what you deserve when the time is right.
This may just be a test for you (which you will be rewarded for if you keep doing good), and it says in the Qur'an 'Surely with difficulty comes ease' so by Allah's will, things will become even better than they used to be.
Be good, stay patient and positive!