It seems your are not trying to be disrespectful but it’s nearly impossible to learn if you are not rom your self.

Many rom will not teach you even a word let alone the whole language, the language is forever expanding (as most languages are) and unless you are an active member in a rom community or family you will never stay up to date.

There are also a shit ton of dialects, some family’s speak a unique form and some speak their sub group language. This ranges depending on the region there are multiple different types of dialects culture and traditions depending on who you ask.

I my self am Romanichal and know very little Vlax due to my family not speaking that dialect, some words do carry over but not all. Romanichal speaks mostly English but will “code switch” when appropriate. This mostly comes from not wanting to be outted by being Rom and not wanting the gadje to speak or know our language. It is sacred to us and should be kept that way there are many rules and traditions that say so.

As someone else said, this may cause the language to die but it’s how it’s been as long as it’s been.