This question need a full book to answer it. These are few brief facts:

1. Every rule in Islam is based on the benefit of the human being whether we know that benefit or not as it is best known by Allah (SWT).

2. Allah, The Glorious Does not need anything but we need to worship Him properly to live a real human life with peace and success.

3. Worship in Islam is within the limits of our abilities and there is no obligatory worship more than our real ability.

4. More we worship Allah, more we get benefit and elevation and peace of mind.

5. The Prophet Muhammad (SAWA) and his holy Progeny Ahlul Bayt (AS) are the teachers who teach us and all the creatures the real worship of Allah.

I advise you to refer to the sermon of Lady Fatima (AS) in which you will see the wisdom and reasons behind the main worships in Islam.

Wassalam.

It is not allowed to do anything which helps committing sins. Betting is unlawful (Haraam) in Islam and any act which helps it is unlawful and the income from unlawful work is unlawful.

Providing service to betting apps is unlawful like providing service to alcohol companies or adultery etc.

Wassalam.

Obligatory Prayers must be performed within its timings and nothing can be more important than performing the obligatory prayers. You should not allow any action which contradicts or causes not performing any obligatory prayers. You should help your husband to perform every obligatory Prayer within its timings and never make any schedule which contradicts any obligatory prayers.

Wassalam.

Serving the people in general and the community is a noble task as we read in the Hadeeth from the Prophet Muhammad (SAWA): Best of people are those who serve and benefit them. System in many countries can have corruption or corrupted persons, but sincere civil servants keep themselves away from corruption and corrupted persons and try to sincerely serve for the sake of Allah. Unethical practices must be avoided all the time.

Wassalam.

Chest beating is an action to express grief and sadness. It goes back to centuries as we read in Hadeeth books that Aysha daughter of Abu Bakr used to beat her face and chest (Dala'il al-Nobowwah by Al-Bayhaqi V.7, P.213 and Musnad Ahmad Ibn Hanbal V.43, P. 369.

Wassalam.

You must always respect your parents no matter how they behave and you must avoid any act or word which can hurt their feelings. Even if ur father is misbehaving with ur mother u are not to confront him as it can hurt his feelings and cause disrespect to him. You can support your mother emotionally with out disrespecting your father.

Wassalam.

We seek the intercession شفاعة of the most humble servants of Allah (SWT). Allah is the only who distribute Riza as He is The Razzaq, and we seek our Riza from Allah (SWT) with the intercession from His Most beloved servants, Muhammad and his Ahlul Bayt (AS).

Wassalam.

The money which you earn should be for a lawful work which never involve misguiding or harming others. When the work is lawful then the income from it becomes lawful.

Wassalam.

We are not allowed to do wrong against those who wronged us in retaliation. We are allowed to defend ourselves in a proper way with out doing wrong or injustice. The wrong of others against us can never allow our wronging them.

Wassalam.

If the water you poured was Qaleel ( Less then 384 liters) ) then it is still Najis, but if the water poured was Kurr (384 liters or more) or tab or current water, then the clothes are Taahir.

Wassalam.