You will definitely need more than 2gb of RAM in 2019 to even browse the webs. You can run a lightweight linux distro with a lightweight browser which could work without any hardware upgrades but not sure if you would want to do that. If you want a decent experience with Windows both an upgrade in memory and an SSD will make a giant difference like lynx has said. One thing I can add though is that you can get a budget SSD if capacity is not a big issue. For example an SSD like this one will work. Just go with a reliable brand and you can find a ton.
https://www.amazon.com/ADATA-SU800-128GB-3D-NAND-ASU800SS-128GT-C/dp/B01K8A29BE/ref=sr_1_3?crid=ZAHJQQI0U3OU&keywords=adata+su800+128gb+ssd&qid=1563214395&s=gateway&sprefix=adata,aps,226&sr=8-3
Another thing to note. Older dell laptops tend to have a slight issue when upgrading to an SSD. It is actually quite an odd one. The SSD is thinner than the original 2.5" hard drive that is in there and that difference with the default bracket of the laptop will sometimes cause the SSD to miss the slight by the slightest amount and the SSD will not be recognized by the system. You can either get a bracket to solve this issue if you run into it or you can stick some rolled up duck tape underneath which will cause the SSD to rise enough to fit right into the slot. A bracket ships with many of the more expensive SSDs but usually will not come with budget SSDs like the one I linked above. If you have any issue with the SSD you are installing please post on this thread. Thanks!
Edit: Another thing to add is that you can use a lightweight adblocker in chrome or the browser of your choice to help minimize ram usage. This can help a ton with older computers in terms of browsing experience