Ni ina jin daɗi sosai a cikin gida.

Ni is an independent (stressable) pronoun “I / me.”
Ina is a subject–aspect form meaning roughly “I am (doing).” The -na part shows the subject “I.”

So Ni ina… is literally like saying “Me, I am…”
You use both when you want extra emphasis on the subject, for example to contrast with others:

• Ni ina jin daɗi sosai a cikin gida.
  Me, I feel very good at home (even if others don’t).

In ordinary, neutral speech you can usually just say:

• Ina jin daɗi sosai a cikin gida.
  I feel very good at home.

Yes. Ina jin daɗi sosai a cikin gida is fully correct and actually more common in everyday speech.

• With Ni: more emphasis on I (contrast, focus, emotion).
• Without Ni: plain statement, “I feel very good at home.”

Literally:

• ji = to hear, feel, sense
• jin = the verbal noun/“-ing” form → “feeling”
• daɗi = pleasantness, sweetness, pleasure, comfort

So jin daɗi is literally “feeling pleasantness.”
Idiomatically it covers several ideas in English, depending on context:

• “to feel good / comfortable”
• “to enjoy (something)”
• “to be happy / pleased”

In your sentence it’s something like “I feel very comfortable / I really enjoy being at home.”

jin is the verbal noun (sometimes called the “-ing” or gerund form) of ji “to feel; to hear.”

Many Hausa verbs have a special form used before objects:

• ji → jin (feel(ing), hear(ing))
• sha → shan (drink(ing))
• ci → cin (eat(ing))

When ji comes right before its object daɗi, it usually appears as jin:

• Ina jin daɗi. – I feel good.
• Ina jin zafi. – I feel pain / it hurts.

So jin + daɗi is “the feeling of pleasantness.”

sosai is an intensifier. In this sentence it’s close to “very” or “really.”

• Ina jin daɗi. – I feel good.
• Ina jin daɗi sosai. – I feel very good / I feel really good.

Other common intensifiers are matuƙa, ƙwarai, but sosai is very frequent and quite neutral in tone.

The most natural place is after the verb phrase it’s intensifying:

• Ina jin daɗi sosai a cikin gida.
  I feel very good at home.

You might hear it in other positions, but some are awkward or emphatic in unusual ways. For a learner, keep:

• [subject + ina
  • jin daɗi
    • sosai
      • (place/time)]

So: Ina jin daɗi sosai a cikin gida is the best pattern to copy.

Both involve the preposition a (“in / at / on”), but:

• a gida → “at home / at the house” (more general location)
• a cikin gida → “inside the house / inside (the) home” (emphasizes the interior)

So:

• Ina jin daɗi a gida. – I feel good at home (general).
• Ina jin daɗi sosai a cikin gida. – I feel very good inside the house/home (more about the inside space, being indoors).

gida can mean both, depending on context:

• house / building: a physical structure
• home: the place you live, emotionally and socially

In many everyday sentences, bare gida functions like English “home”:

• Zan tafi gida. – I’m going home.
• Ina gida. – I’m at home.

So here, a cikin gida is most naturally understood as “at home / in the house.”

ina is part of a set of continuous / progressive forms:

• ina – I am (doing)
• kana / kina – you (m/f sg) are (doing)
• yana / tana – he / she is (doing)
• muna – we are (doing)
• kuna – you (pl) are (doing)
• suna – they are (doing)

With most verbs, it means something like “am/are/is V‑ing” or a current/habitual state:

• Ina cin abinci. – I am eating / I eat (now).
• Ina jin daɗi. – I (am) feel(ing) good / I feel good.

So yes, ina marks a present, ongoing or current state here, similar to English “am” + -ing, but the usage is a bit broader and can cover simple present in many contexts.

Use the perfect/past subject form na with ji:

• Na ji daɗi sosai a cikin gida.
  I felt very good at home. / I really enjoyed being at home.

Compare:

• Ina jin daɗi sosai a cikin gida. – I (am) feel(ing) very good at home (now / generally).
• Na ji daɗi sosai a cikin gida. – I felt very good at home (then / on that occasion).

One common negative pattern with jin daɗi is:

• Ba ni jin daɗi sosai a cikin gida ba.
  I don’t feel very good at home.

Structure:

• Ba ni… ba → negative around the clause
• jin daɗi → feeling good
• sosai → very
• a cikin gida → at home / inside the house

So you literally have: “It is not I who is feeling very good at home.”

Yes, ɗ is a different consonant from plain d in Hausa.

• d: a regular /d/ like English “dog.”
• ɗ: an implosive d; you pull a bit of air inward as you pronounce it. It’s written with a dot below: ɗ.

In many learning materials you’ll see the dot, and it’s important because it can change meaning. So daɗi is not spelled dadi in standard orthography; it’s daɗi with that special consonant.

No. The whole sentence:

• Ni ina jin daɗi sosai a cikin gida.

is the same whether the speaker is male or female. Hausa doesn’t change pronouns or verb forms for speaker gender in the first person.