To avoid duplicates, please use the "Search" function, it is at the top in the middle.
Search -> Announcements and then you search for exactly where you want to search for the topics.
For personal activity tracking, on the left when you enter your profile under the cover picture, "See my activity" you can see everything you do, everything you post, etc. (
And for all the problems above, you just have to be more careful.. to check if you have added tags, if you have set a timer on the topic, if the title is good.. if you have a good source, etc.
For me, this proposal is a bit useless because I can check all this data with just a few clicks.
Btw, "I know most people just like to make the post without adding many details, but I prefer to work in an organized way and I don’t like receiving warnings. Whenever there’s an issue, I look for solutions to prevent the same problem from happening again." - I appreciate that you are active everywhere.. you always forget to resize the pictures in your topics. If no one has done it, I'll leave you a link here on how to learn how to make the picture smaller and all the details.
Tutorial posting