What should Sikhs do, considering the current situation, to promote the flourishing of Sikhi?

Muskan Kaur ji, you must be already aware as to who is a Sikh and Sikhism stands for what? To recapitulate, please read the following:-

1. “Sikh” is a “Seeker of Truth” and “Sikhism” stands for:-

(i) Oneness of Humanity;
(ii) No discrimination owing to gender, race, caste, creed, or color;
(iii) No empty rituals & worthless religious practices;
(iv) No life after death theories. Rather, it stands for salvation/emancipation, during the life time on getting rid of vices.

2. Further, Sikhism:-

(i) teaches a Sikh to live his life in the present, as per Hukam of Akalpurakh and teachings of ever living Guru, Sri Guru Granth Sahib;
(ii) expects a Sikh to earn an honest living, remain connected with Akalpurakh all the time and share his honest earning with poor and needy;
(iii) expects a Sikh to be compassionate, kind, tolerant and is to love all i e. he is to reach the mental state of seeing Akalpurakh in everyone and hence having friends only and no enemies;
(iv) expects a Sikh to serve the humanity, without any distinction of caste, creed and religion.

3. Guru Granth Sahib teaches a person/Sikh to get rid of vices (ਵਿਕਾਰਾਂ ਤੋਂ ਛੁਟਕਾਰਾ ਪਾਉਣਾ), become a righteous/virtuous (ਸਚਿਆਰ/ਗੁਣਵਾਨ) person. The goal of becoming a righteous/virtuous person was laid down by the First Guru Person Guru Nanak Sahib, in the first Pauri of Jap Baani itself, when he said:-

Kiv Sachiara hoiey, Kiv Kude Tute Pal,
Hukam Rajai Chalna, Nanak likhya Naal.

ਕਿਵ ਸਚਿਆਰਾ ਹੋਈਐ ਕਿਵ ਕੂੜੈ ਤੁਟੈ ਪਾਲਿ ॥ ਹੁਕਮਿ ਰਜਾਈ ਚਲਣਾ ਨਾਨਕ ਲਿਖਿਆ ਨਾਲਿ ॥੧॥

4. Once a person/Sikh achieves the goal of becoming a righteous/virtuous person and becomes one with Akalpurakh and Shabad Guru, who are spiritually embodiment of each other, he will live a disciplined life and achieve the stage of spiritual equipoise (ਆਤਮਿਕ ਅਡੋਲਤਾ) and spiritual bliss (ਆਤਮਿਕ ਆਨੰਦ). The main goal is to achieve emancipation/salvation in this life itself (ਜੀਵਨ ਮੁਕਤ ਹੋ ਜਾਣਾ) since there is no concept of salvation/emancipation, after death in Sikhism.

5. Imbibing the above teachings, of Guru Granth Sahib, is what is called Gursikhi.