Alikumu salam ua rahmatullah uabarakatuhu,
Alhamdulilah, Muslims must celebrate only three ‘Eids:
The evidences for your question sister are as follow:
Aayshah reported that the Prophet sallallaahu 'alayhi wa sallam said:
"For every people there is a feast and this is our feast." [Sahih Al-Bukhari: (vol. 5, no. 268).]
"Allâh has given you better than those feasts: the ‘Eid-ul-Adh-haa (Feast of Sacrificing), and ‘Eid-ul-Fitr (feast of Breaking the fast)." [Sunan An-Nasaaee: English translation: (vol. 2, p.333, no. 1559), Sunan Abu Dauwud: English translation: (vol. 1, p.293, no. 1130). It is authenticated by Shaykh Al-Albaanee in Saheeh Sunan Aboo Daawood: vol. 1, p. 210, no.1004.]
(1): ‘Eid-ul-Fitr,
(2): ‘Eid-ul-Adh-haa,
(3): Friday is the day of ‘Eid for Muslims
Hadith - Abu Dawood #1134, 1/675, Narrated Anas Bin Malik
The Prophet alayhee salam came to Medina with two days they played in.
The Prophet salallahu alayhee wa salam said, ‘What are these two days?’ They said, ‘These are two days we used to play in, in our Jahiliyah.’ The Prophet said, ‘Allah has replaced them with two better days: Eid Al Adhaa and Eid Al-Fitr’.
And for other then these three days we have the following hadith sister : "Umm Salamah said the Prophet used to fast on Saturdays and Sundays, and when asked he said: "They are two days of Mushrikeen’s holidays so I like to oppose them in their ceremonies." [Musnad Imaam Ahmad.]