If you loose your Nostr key, you loose your identity. In short you are fucked.
quoting
nevent1q…vy9k![]()
naddr1qvzqqqr4gupzqpxfzhdwlm3cx9l6wdzyft8w8y9gy607tqgtyfq7tekaxs7lhmxfqq35ummnw3ez65m9vd6hy6t50yk5zcmrda6kuapdfpskx6mn94h8zcm2d4jsfjd2gy
quoting
nevent1q…vy9k![]()
naddr1qvzqqqr4gupzqpxfzhdwlm3cx9l6wdzyft8w8y9gy607tqgtyfq7tekaxs7lhmxfqq35ummnw3ez65m9vd6hy6t50yk5zcmrda6kuapdfpskx6mn94h8zcm2d4jsfjd2gy