The short answer
Not every token can be bridged to every network. A route requires compatible infrastructure, sufficient liquidity, and a destination representation that the provider supports.
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Can You Bridge Any Cryptocurrency?.
Why cross-chain support depends on tokens, networks, liquidity and available infrastructure.
How it works
A token can also be technically available but uneconomical for a small transfer because fees exceed the value being moved. Support and liquidity are separate questions.
Why it matters
Token symbols are not enough to establish compatibility. The exact network and token contract or representation matter.
Practical takeaway
Use the live OneSwap route to see what is currently supported. If no route is returned, do not send the asset directly to another network and assume it will appear there.