Ane, I know what you mean about Grammarly. It’s always telling me that my subheadings need periods. No, my dear Grammarly, they don’t. I also got a suggestion to change something because it was an outdated term when I was talking about the 1950s! It’s a great tool, but you still need to proofread after using it and ignore what doesn’t make sense. I’ve found errors it missed. Keep writing, you’re doing fine.