Realize loss or sit it out?

Hello everyone,

At the end of last year, unfortunately due to a lack of knowledge and too much trust in family members, I bought a total of €190 worth of shares in $NTMC (-11.05%) shares. Well, from the purchase price (€1.20 per share) to now (approx. €0.40 per share), it has gone down quite rapidly, as I had too little information about the share.

What do you say, should I sit it out or sell the rest of the shares and put them into my ETF savings plan next month, for example?

Thanks for your answers 👍🏼