Some mental issue, i could use some help.

Hi everyone im a young guy 22(m) and i think im starting to get trauma from internet, let me explain since child ive never been good mentaly, was diagnosed with deep depression for 7 years last year when my latest relationship broke, since then i keep loosing myself on internet reading storie, book, and more.

Now here is the issue im just getting recommende story of cheating or unfaithful affair everywhere and its starting to really put something on me, i want to have a beautifull relationship like everyone i think but the possibility of cheating or affair is really putting me down, i dont have a high self esteem too,

The worst part is that now for the past 5 month it even prevent me to sleep i find myself awake at 5 6 in the morning just wanting to punch or destroy something, im not a violent guy i never got in a fight in my entire life but i just feel my blood boil wanting to get out my frustration and i dont really know what to do with these feelings,

i wish someone with some similar issue could help or give me some tips, sorry for the bad english im not a native, thanks for reading me.