If I talk to my kids in my mother tongue from the moment they’re born will they be able to learn it?

Question for the couples who speak different languages. My Partner is a native English speaker. I’m fluent in English and also a native speaker in another language. I am mixed raced, however, my mom never spoke to us or taught us her mother tongue. Growing up my parents interactions were mainly in English and that’s how I was able to learn and understand English from a very young age even though English is not my mother tongue.
It is important for me and my Partner that our kids learn different skills in life such as: they have to learn a different language, they have to get into sports and they have to learn how to play an instrument.

Since I’m fluent in another language I would like to teach my kids as I think it can be beneficial for their future and it would also be much easier for them to interact with my side of the family.
What’s the best way to teach them apart from talking to them in my mother tongue and have them watch cartoons/videos in my native language?

If I talk to my kids in my mother tongue from the moment they’re born will they be able to learn it?
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