In Surah al-Zumar Allah uses a word: ibādi, referring not only to Muslims to everyone. Allah shows care and concern us all.  However, He also doesn’t say “you’ll never experience unhappiness in life” or that “your mom won’t die”. Rather, He says, if you do what I say you will live forever after death/after Judgment in tranquility and have whatever you want.

In other words, salvation.

قُل يا عِبادِيَ الَّذينَ أَسرَفوا عَلىٰ أَنفُسِهِم لا تَقنَطوا مِن رَحمَةِ اللَّهِ ۚ إِنَّ اللَّهَ يَغفِرُ الذُّنوبَ جَميعًا ۚ إِنَّهُ هُوَ الغَفورُ الرَّحيمُ

وَأَنيبوا إِلىٰ رَبِّكُم وَأَسلِموا لَهُ مِن قَبلِ أَن يَأتِيَكُمُ العَذابُ ثُمَّ لا تُنصَرونَ

وَاتَّبِعوا أَحسَنَ ما أُنزِلَ إِلَيكُم مِن رَبِّكُم مِن قَبلِ أَن يَأتِيَكُمُ العَذابُ بَغتَةً وَأَنتُم لا تَشعُرونَ

أَن تَقولَ نَفسٌ يا حَسرَتا عَلىٰ ما فَرَّطتُ في جَنبِ اللَّهِ وَإِن كُنتُ لَمِنَ السّاخِرينَ

“[Muhammad – Tell the people that I, Myself, have said, ‘All My servants who have acted excessively against their own souls! Don’t lose hope of God’s mercy, for God can forgive all sins. He truly is the Forgiving and the Merciful!’

‘Turn towards your Lord and surrender to Him before the punishment overwhelms you, for then you’ll have no one to help you.’

‘Follow the best of what’s being revealed to you from your Lord before the punishment overwhelms you all of a sudden without your even realizing what’s happening.’

‘For then your soul will cry out, “I’m doomed! I neglected my duty to God, and I scoffed!” — Qur’an, 39: 53-56

There is no “guess work” in religion:

عن وابصة بن معبد رضي الله عنه قال‏‏ أتيت رسول الله صلى الله عليه وسلم فقال ‏جئتَ تسألُ عن البرِّ والإثمِ قلتُ نعم فجمع أصابعَه الثَّلاثَ فجعل ينكُتُ بها في صدري ويقولُ يا وابصةُ استفْتِ قلبَك والبرُّ ما اطمأنَّت إليه النَّفسُ واطمأنَّ إليه القلبُ والإثمُ ما حاك في القلبِ وتردَّدُ في الصَّدرِ وإن أفتاك النَّاسُ وأفتَوْك

Wabisah bin Ma’bad, a Companion of the Prophet ﷺ reported that he went to the Messenger of Allah ﷺ and he asked me, “Have you come to inquire about piety and sin?” I replied, “yes”. He ﷺ then gather his three fingers together and poked me in my chest, saying “Wabisah … ask your heart regarding it. Piety is that which contents the soul and comforts the heart, and sin is that which knots up the heart and causes one’s chest to be hesitant even if people pronounce it permissible and give you verdicts on such matters again and again.” — al-Mundhiri relates this in al-Targhib wa’l Tarhib with a sound chain

What you’re missing out on the other 11 months of the year:

تُفتَحُ أبوابُ الجنَّةِ يومَ الاثنينِ ، ويومَ الخميسِ ، فيُغفَرُ لِكُلِّ عبدٍ لا يشرِكُ باللَّهِ شيئًا ، إلَّا رجلًا كانت بينَهُ وبينَ أخيهِ شحناءُ

“The doors of Paradise are opened every Monday and Thursday. Thus, every worshiper of God is forgiven except for the person where there exists rancor between him or her and his or her brother or sister.” — Related by Abu Hurayrah, recorded in Sahih Muslim, #2565