It’s possible to run 98 in magic dosbox but it isn’t always stable. Restarting till it’s stable isn’t uncommon for me. Installation was a pain, went back and forth with parts of the installation on dosbox daum on my pc and in mdb on my phone but it worked. It’s even kinda tricky getting directx 9.0c to install. Think I had to use the 9.0b installer with the c files… been a while.
Archived a bunch of different clean installs of 95/98 with different versions of direct x to avoid future headaches…
Without knowing much about the fallout patches using win98 is about the only thing I can suggest.