Spelling errors in literature, brrr ... Even at a young age I circled or emphasized spelling errors in books and magazines when they were striking. Sometimes, if there are too many mistakes in the journal, I do not buy it. Both I and the same as me could name all magazines in which there are always no mistakes, because there are not many of them. I think it was quite natural for me to become a corrector. I have a degree in proofreading and editing, I read novels, as well as websites https://www.editius.com/research-paper-editing-services/, leaflets, leadership, etc. I advise you to entrust your manuscript to someone who loves words and has experience in writing texts in accordance with the needs of the market.