Many people use fake avatars, names and locations. Those are not good indicators for bots.
Presumably it is more obvious by the stuff being posted.
However, the whole question is mostly irrelevant. If you don't care what an account tweets about, don't follow it.
The big issue with the whole bot manipulation narrative is that while it is easy to create fake accounts, it is not easy to also get followers for those accounts. Without followers (with voting rights, not some other bots you bought on the dark net), the bot accounts are irrelevant.
Presumably it is more obvious by the stuff being posted.
However, the whole question is mostly irrelevant. If you don't care what an account tweets about, don't follow it.
The big issue with the whole bot manipulation narrative is that while it is easy to create fake accounts, it is not easy to also get followers for those accounts. Without followers (with voting rights, not some other bots you bought on the dark net), the bot accounts are irrelevant.