I don't wanna be that person but in spoken Spanish we don't use some pronouns at the beginning of sentences, they're kinda implicit So like we don't say "Yo estoy caminando" but what we say in conversations is "Estoy caminando" Source: trust me, bro (I'm kidding lol Spanish is my actual native language and I like teaching English/Spanish😂 so really trust me) But this sentences sound good so people can learn a lot 😊😊