Saving those important things

Recently, I learned deleting those comment and post METAS in phpmyadmin for me to have more disk space in my web hosting. I also learned that every time I made changes on my posts and make some changes on those comments in my blog, it will create records in my web hosting. Upon discovering these things I’ve noticed that those posts revisions create more file records compared to those publish posts that I have. Also, those trash folders and spam folders, if the files are just left there without deleting it completely, it will create more loads in the disk usage space that I have in my web hosting. Anyway, I’m so glad to learn these things because I make my web hosting(s) free from those unwanted files. I am just trying to figure out on how to save my disk usage spaces since there is no such thing as UNLIMITED DISK USAGE WEB HOSTING. And since there is no such thing as unlimited web hosting, I made it a point to somehow eliminate those unwanted files and just remain those important published posts/true comments!