In order to achieve scientific excellence through scientific writing, you should strive for a descriptive, i.e. non-judgmental, writing style. Logic, comprehensibility of the statements and diversity of perspectives should also be given. Finally, make sure that you describe the individual sources to which you refer in a neutral manner and highlight relevant aspects for scientific writing.
MORAL ASSESSMENTS are inappropriate for scientific writing. Therefore, your own opinions must be treated with care, because if you want to defend your own opinion, you must be able to formulate it in the form of theses and derive it from evidence. You should therefore avoid the following formulations:
"I think it could be..."
"My experience is that..."
"Many are of the opinion that..."
"It is bad/good/unbearable/...".
Note here that your argument is embedded in a scientific context and, supported by professional literature, can be understood through scientific writing. For a long time, the word "I" was omitted to establish objectivity. Nowadays, whether or not you should use the personal reference depends on your field of study. If you use the word "I", it is in the preface and/or the introduction and in the conclusion. Only in practice reports you can use it for scientific writing outside these text parts.
I would now like to write or reflect on the subject of nightshade plants, which they have certainly already encountered, and in addition I point out that this subject is described as particularly difficult by many experts, of which there are not so many, as is commonly assumed.
In the present work, the subject of the function of enzyme XY in the metabolism of the Solanaceae (nightshade family) is to be dealt with.
This subject is complex in nature, as suggested by the high number of controversial relevant publications (see fundamentally Mustermann 2014).
In the first example, you are shown the following stylistic errors: unclear and too long sentence structure, subjectivity, frequent self-reference, and the use of filler words (ex: but, also, actually, yes, etc.). In addition, the source references are missing.
Don’t forget to proofread it, or hire another person to do it for you. Start with searching for a quality writing service. This article about papersowl.com recently published is a good place to start.