I think it's important to learn Ukrainian and Russian if you want to talk with people who have one of these languages as mother tongue.
You don't mind it is better to speak or / and understand the native tongue of yours contacts or / and your instead of an intermediate language to favorise understanding ?
There are many ways to communicate without English as intermediate language.
In my examples there are Anton (Cyrilic : Антон) the Ukrainian speaker , Boris the Russian speaker (Cyrilic : Борис) , Charles (Cyrilic : Шарль) the French speaker who want to speak together.
1.Each people speak in the language of the other.
Anton will speak in Russian when he will speak to Boris then Boris will answer to him in Ukrainian.
They will speak to Charles in French and he will answer in the native tongue of his interlocutor.
2.Each people speak in his own language.
Anton will speak in Ukrainian when he will speak to Boris then Boris will answer to him in Russian.
They will speak to Charles in theirs native tongue and he will answer in French.
3.Monday they would talk in Ukrainian , Tuesday in Russian , Wednesday in French etc...
4.They can learn Esperanto and use it.
5.They can mix languages.
In my knowledge the majority of non native English speakers aren't fluent.
English spoked by these people is generally Globish.
What is Globish ? https://en.wikipedia.org/wiki/International_English
You don't mind it is better to speak or / and understand the native tongue of yours contacts or / and your instead of an intermediate language to favorise understanding ?
There are many ways to communicate without English as intermediate language.
In my examples there are Anton (Cyrilic : Антон) the Ukrainian speaker , Boris the Russian speaker (Cyrilic : Борис) , Charles (Cyrilic : Шарль) the French speaker who want to speak together.
1.Each people speak in the language of the other.
Anton will speak in Russian when he will speak to Boris then Boris will answer to him in Ukrainian.
They will speak to Charles in French and he will answer in the native tongue of his interlocutor.
2.Each people speak in his own language.
Anton will speak in Ukrainian when he will speak to Boris then Boris will answer to him in Russian.
They will speak to Charles in theirs native tongue and he will answer in French.
3.Monday they would talk in Ukrainian , Tuesday in Russian , Wednesday in French etc...
4.They can learn Esperanto and use it.
5.They can mix languages.
In my knowledge the majority of non native English speakers aren't fluent.
English spoked by these people is generally Globish.
What is Globish ? https://en.wikipedia.org/wiki/International_English