Missing Technicals; Any Shot?

Hello WSO,

Sophomore here at semi/target navigating late stage recruiting. I've been in a few cycles but have had bad luck converting to interviews so I've sat on roughly 4 so far, one for a non-IB position that 3 for IB positions. It's beginning to feel a little hopeless - I had the first 2, one I missed one question and another I didn't know how to answer a question. In both cases, I got dropped in the first round of techs. 

I just had an interview with Rothschild GMS, I missed one tech on finding EV given a multiple, ebitda, debt and cash (accidentally added debt and subtracted cash after); honestly, is there any shot of landing it? The rest of the interview went well, good story, good tech.

If not, any advice? I know recruiting has more or less wrapped up on the structured end; any advice for networking going into sophomore summer/junior year? Is there still any way to break in?