Setow, thanks for uploading the pics for me! I don't know what is taking up all the space on your phone either, but it does look to be chrome. I have a few more questions for you, and then I'll be able to help you out a bit more. first, do you have an SD card? (I'm assuming yes.) What is the size of the SD card, and do you have it partitioned? Do you have access to a computer, and if so, is it Windows, Mac, or Linux? If Windows, can you download and install programs? If so and it's not partitioned, download and install Paragon Partitioner, and SD Formatter (I believe is the name of the second one), format the SD, then partition it with paragon. I personally have my SD card split 27.05GB for the main partition, and 2.65GB for the second partition, both primary and formatted as Fat32. Depending on the size of your SD, it may vary for you. Make sure you have the contents of your card backed up on your computer.
Definitely read this once you've partitioned your card, and then run Link2SD, follow the on-screen instructions, reboot, click the funnel-looking icon, set it to user, press the three dots in the top right, multi select, click the icon farthest to the left (not the check), click the dots again, create link, all three checked, and click okay. Doing this usually frees up a lot of space, as you can see in my picture.
Wow, that was long, really long. Again, I am sorry that this fell into the back seat for me