What makes ir irregular in the preterite tense?

How is the verb ir conjugated in the preterite tense?

I am so confused about these questions and I can't find anything in my lesson that helps.

https://www.spanishdict.com/guide/spanish-preterite-tense-forms

https://www.spanishdict.com/conjugate/ir

In the preterite tense, the verb "ir" (meaning "to go" in English) is irregular. Irregular verbs do not follow the regular conjugation patterns of the verb tense. Here's how the verb "ir" is conjugated in the preterite tense:

yo fui (I went)
tú fuiste (you went)
él/ella/usted fue (he/she/you went)
nosotros/nosotras fuimos (we went)
vosotros/vosotras fuisteis (you all went)
ellos/ellas/ustedes fueron (they/you all went)

To understand why "ir" is irregular in the preterite tense, you need to familiarize yourself with the conjugation patterns of regular verbs in this tense. In Spanish, regular verbs in the preterite tense follow specific endings depending on their verb ending (-ar, -er, or -ir).

For example, most regular -ar verbs form their preterite tense by removing the -ar ending and adding the following endings:
-é, -aste, -ó, -amos, -asteis, -aron

Similarly, regular -er and -ir verbs form their preterite tense by removing the -er/-ir ending and adding the following endings:
-í, -iste, -ió, -imos, -isteis, -ieron

However, "ir" does not follow these regular patterns. Instead, it has its own set of conjugation forms. So, you need to memorize the specific conjugation of "ir" in the preterite tense.

If you're still confused, I recommend reaching out to your teacher or classmates for further clarification or referring to a reliable Spanish grammar resource that specifically covers irregular verbs in the preterite tense.