As I’ve said before when this has been asked:
You will be hard pressed to find a laptop which doesn’t meet the exacting and demanding requirements of “Office and a web browser” (though I’m not sure how this ties in with “53 apps running at once,” what are the other 50?) I’m typing this right now on a ten year old laptop.
Lenovo for build quality. Dell Outlet for bargains. Avoid no-name / store-own brands.
Look for something with an SSD, or budget for adding one. SSD prices have gone through the floor lately.
Plan for backups. External storage, cloud.