The exact ways you say 'My', 'Your', 'Its' and 'Our' in Polish depends on the case, gender and number (singular/plural) of the noun.
The following table is from Adam Łukasiak's Clozemaster site. I'm just putting a copy here in case something happens to that site!
You might want to give Clozemaster a whirl. The basic version is free and a great way to practice your Polish.
And if you would like to know more about "My", "Your", "Its", "Our" because you're a bit of a Grammar fan the correct search term for Google is "Polish Possessive Pronouns".
Table explanation is below
The order of the table is:
The swój version can relate to "my", "your", "its", etc. I'll come back and write a full explanation on this in the future but it is not important for beginners.