Bad English ruined my interview🙂

I had two interviews this week and ruined both because I fumbled while speaking. I am a Marathi-speaking person who studied in a completely Marathi medium and haven't had much exposure to speaking English. Now, when I try to speak, my tone feels unnatural, and I fumble due to fear. This was pointed out during my interviews, which negatively impacted my performance. Despite scoring a decent percentile, I feel this issue might prevent me from converting even a Tier 2 college