The best solution I have for sending files to my phone rn:

Step 0:
Connect laptop to phone's hotspot.
Step 1:
Open terminal and go into the directory of interest
Step 2:
python -m http.server 1337
Step 3:
Find IP address of laptop on phone's hotspot network.
Step 4:
Connect phone to the IP of the laptop on port 1337
Step 5:
Click on files you want to download.