Either your study English/Business English or French with me, language studying & learning is pretty much like a construction game: there are designated parts/pieces (the vocabulary) & a set of efficient rules (we call this structure or grammar) to assemble one's thought logically so to reach the intended message (your goal!). Yes, I will help you to reach your private or business goals as you will progressively learn to use the studied language, not as an objective but a means (or tool) to realize a higher objective which requires it to encompasses it!
By the way, if ever you think only the so-called "native speakers" can master the 'targetted' language, well, learn about me and thrust yourself too - i.e. never let anyone else tell you what your limits should be and only accept to compare yourself with the "natives" only after you've studied efficiently for the same number of years as their age. Doing so will show you that being a "native speaker" is no proof of any achievement whereas your English (or French) will very likely become superior to theirs! (Yes, it takes 5, 10, 15, 20 or 25 years, depending on the objective, but I guarantee that you will by then speak a better English/French than the equivalent 5, 10, 15, 20 or 25 years old 'average native speakers' of any of any of the two relating languages!).
As a veteran language teacher (qualified to teach both, English & French, I will train you to think in your target language: just like the parts/pieces of a jigsaw puzzle cannot be exchanged or traded with those of a set of blocks (like Lego) or a set of mechanical parts like Meccano, and that any of the set of construction rules enabling to make the intended object or message cannot be exchanged/traded either between the different games.
Any request is welcomed, as I am used to teaching the jargon you need even if this means I do the necessary researches for that!