Solidity, Cryptography Knowledge,Web3 JS,React; Big Project nam low level C++,Java Wage.. Not an expert just enthusiastic...blockchain dev. will answer for ur question
Thailand also blocked crypto and related transactions. Other countries also will join eventually. But Blockchain has a bubble now. When you see jobs in upwork 50% blockchain projects and frontend work. Learn it sooner than later. Blockchain is not only crypto. It will be used by governments in future for other areas like deeds, but not crypto.
Small Scale Company Projects walata nam BlockChain Apply karana eka useless e hinda Loku Job pool ekak thiyenawada dannne na. Anyway you can learn both right ???