What's the best file system for many small files?

I have a Debian 10 server with a 2TB drive where I want to store over 120 million small files. If I use ext4 I run out of inodes. What file system should I use? I've been reading about reiserfs and reiser4, but I'm not sure if either of them are still supported. Is there a file system with a built Debian package that I can use? The main use case is providing 256x256 raster map tiles to users with Apache. I'm guessing that speed isn't that important as the limiting factor will be the ping time. Using as much of the bytes as I can is mildly important, but I also have a lot of free disk space. Edit: The files are typically 1kb to 3kb.