Google STEP Intern interview questions

CV screening, after 2 weeks I received an invitation to an online assessment, which was 90 minutes and contains a 2 leetcode-style questions, difficulty level easy to medium, then after another two week, I receive a contact email from a hr for the next round interview (phone interview), where I was rejected since this one only target first year students for 3 years degrees

Interviewer were nice and welcoming, but technical question was difficult. Maybe because i am unucky. rejection was sent out a week later for me. I felt really underprepared and couldn't answer some questions.