So, versus using an intricate sigil for a simple intention, you can think about what it is that you want to do or happen and chant your native language vocally or sub-vocally (with your mouth or in your head). Instead of adding an extra step of translating or transliterating your native language in a working, you can just keep it the same where it has more energy because it is more consistent with you internally so energy doesn’t have to go into changing you. Furthermore, it is in a more accessible form. This means you need not have to use some culture, language, or tradition that is any different than what is conventional for your everyday life.
What I have said is true for psychic energy and power that is intrinsic to yourself; however, what about magic that is outside of yourself? Metaphysically, what about forces that aren’t psychic? One reason why magical languages, rituals, and traditions are thought to have power is that there is an idea that your working benefits from power derived from its cultural significance (in a esoteric sense), the amount of people who have practiced it, unifying archetypes, astral entities in the sense of them being real (having an existence distinct from the perception of the minds of the people who conceive of them), etc. The idea is the older the system, the more people over time have used it. If the premise is there is an aggregation based on the summation of instances over time that propagates culturally, you would have to do the same thing for any culture.
For example, a ceremonial magician doing an invocation or evocation of Jupiter for financial success in the United States likely is from an Anglophone culture. The phrases “financial success”, “wealth”, etc frequent among ceremonial magicians and non-magicians alike because the ceremonial magician would belong to a larger population that is a superset of their culture. These phrases in English, along with the archetypes associated with them, are more frequent. In other words, the word “wealth” in an Anglophone society is more culturally frequent. Some archetype associated with this might be mansions, big houses, nice cars, etc due to these being frequent intuitive connections. Cultural ideas of Jupiter being connected with wealth and corresponding languages, symbols, and archetypes are less frequent. This means the English word “wealth” (and the corresponding archetypes) has more relevant “cultural weight” behind it that is greater than a particular occultic lineage or system.
This is not to say that the astral properties of Jupiter are purely conceptual or archetypal; I am somewhat agnostic and pragmatic about that particular topic. The point I am making is that symbols used to draw on the astral power of Jupiter for wealth can be substituted with the word “wealth” to draw on the power of the concept from your own culture. If working with astral bodies within the sense of Western esoteric occultism is just dissonant with you, you can simply fall back on your own culture, whatever that might be. Working with astral entities or occultic cultures surrounding that may not be resonant with you; however, the culture that is native to you along with the language that you speak is.
There is an implicit cultural bias in a lot of occult communities regarding magical competency and views of accessibility. If a particular language works better for magic than a different particular language and language is intrinsically cultural, the implication is that one culture is better at magic than another. That is not the case of course, but that is an assumption a lot of people have. This implies that if you want to learn magic and the culture you come from doesn’t fit into occultism, you are told and expected to change yourself. As was pointed out, the energy you use to do that is energy you don’t have for the actual magic, so there is no practical reason to do so other than a group of people attempting to be authority and judges of magic. A more concrete example is you were to speak about magic in a typical occult community, the expectation would be that the symbols you use and the languages you use would conform to traditional occult cultures and traditions I.e. divination through tarot cards and runes of Futhark and spell casting through some derivation of Enochian or Agrippa. The subtle implication is one of conformity. Honestly, that attitude is an arrogant one, because what is being subtly implied is that whatever culture you come from and whatever language you speak, it is intrinsically less than as it relates to magical competency. The older I get and the more experience I get under my belt, the more I realize that magic is broadly about creativity, intuition, and imagination, so the ability to wield it is tied to those things. Those aspects are really inherent to all forms of human culture.