vVlog

Quand j'étais plus jeune, ma famille et moi sommes allé(e)s en Inde.

If you were a child, the correct term would be "quand j'étais petite"

Nous sommes allés auà Goa parce qu'il est oùe c'est là que ma grand-mère habite.

The "c'est/que" emphasis structure would be used here

Nous avons séjournionsé chez elle pour quelques nuits avant nous sommes retournés àde retourner à/de regagner notre appartement à Panjim.

Foreground action considered in its consequences => passé composé
Duration is expressed with "durant/pendant" or nothing at all, like in this case, but almost never with "pour"
"Séjourner" and "regagner" have the same subject => Infinitive structure = avant DE RETOURNER

Panjim est la capitale due Goa.

Most States and regions require a definite article, but Goa doesn't (everyone would say "de/à Goa" at least)

Au GoaLà-bas, je mangeais l/j'ai mangé des mangues, ldes noix de coco, ldes sucreries indiennes et ldes poissons.

"là-bas" ("there") to avoid repetitions
You ate some of these things, so the indefinite plural (de+les) would apply

En Inde, la transportation qu'este moyen de transport le plus courant est unle rickshaw, mais nous travaillions eavons utilisé un scooter.

In French, "transportation" is an old-fashioned word that doesn't have this meaning
Here however, it's "rickshaw" in general/as a concept, so "le"
If you were on vacation, "travailler " wouldn't fit

Sur ce scooter de location, mon père et moi visitionssommes allés à la plage Caranzalem, à Panjim.

"visiter" applies to places you can tour, like a country or a museum. "Visiter la plage" sounds funny, unless you're talking about Omaha Beach or such places