Заблудился means "got lost" or "lost my way". While it can refer to physically losing one's way, it's often used metaphorically to describe being lost in thoughts, emotions, or even love.
In this song, the artist sings, "Я заблудился в её глазах" (I got lost in her eyes). This powerful imagery conveys a sense of being completely overwhelmed and captivated by someone's gaze, making it a memorable and emotionally resonant word.
Have you ever been so completely smitten that you feel like you've lost your way, but in the best possible sense? That's exactly what Sayan is singing about in "Заблудился (Zabludilsya)"! The title itself means "I got lost," and he repeats it right away: "Я заблудился в её глазах" [I got lost in her eyes]. He's so deep in love, he doesn't even know how it happened: "Так влюбился, но не знаю как" [I fell so in love, but I don't know how].
He's clearly head over heels, even admitting, "Боже, я схожу с ума!" [God, I'm going crazy!]. He feels something truly special about this person, saying, "Что-то в тебе есть, запала в душу" [There's something about you, you've sunk into my soul]. He's willing to break all the rules for her and lay all his feelings bare: "Ради тебя я всё нарушу, Вытащу все чувства тебе наружу" [For your sake, I'll break everything, I'll pull all my feelings out for you]. It's a really intense declaration of love, where he basically says everything falls apart without her. He's ready to let go of everything else if she just stays with him. He doesn't even need to tell her how he feels because, as he says, "Она всё знает сама" [She knows everything herself].