How to strengthen the bond with your sister

Hey guys my sister is 11 years old and I’m 23. I feel like for at least the past 5-6 years our relationship was very distant.. we barely spend time together and I know for a fact she doesn’t feel comfortable to talk to me or really anyone in the family which I hate. I really want our bond to grow closer and I feel like absolute shit for letting us get like this 😭 I feel like I put my 2 brothers before her always or shower them with more attention or whatsoever and I don’t know why I push her away or just don’t have that same ‘love’ for her. Sounds soo terrible but believe me I love her so much and just want to get closer to her what tips would u give me on what to do together and also how to let her trust me to tell me important things in her life she can’t tell anyone else