A. it's another way to down load rpm file with opear website for fedora and redhat package.
http://www.opera.com
https://www.opera.com/download/get/?partner=www&opsys=Linux&package=RPM
http://download3.operacdn.com/ftp/pub
B. install rpm package
# rpm -Uvh opera-stable_57.0.3098.91_amd64.rpm
Updating / installing...
1:opera-stable-57.0.3098.91-0 ################################# [100%]
C. it's a show stable use and no trouble in Fedora29S KDE System, check ffmpeg installation status.
# rpm -qa|grep ffmpeg
ffmpeg-libs-4.0.3-1.fc29.x86_64
ffmpeg-devel-4.0.3-1.fc29.x86_64
ffmpeg-4.0.3-1.fc29.x86_64
orion opera]# pwd
/usr/lib64/opera
opera]# ls
icudtl.dat opera_100_percent.pak opera_crashreporter
libEGL.so opera_125_percent.pak opera_sandbox
libGLESv2.so opera_150_percent.pak resources
libffmpeg.so opera_200_percent.pak setup_repo.sh
localization opera_250_percent.pak snapshot_blob.bin
natives_blob.bin opera_autoupdate swiftshader
opera opera_autoupdate.licenses v8_context_snapshot.bin
opera.pak opera_autoupdate.version
D. in case, unstable set or different, input your home configuration like a commet "fcomida"
# vi .bashrc
LD_LIBRARY_PATH=/usr/lib64/opera/opera opera
E. Opera Web Brower stable also simple and very fast run in linux System.
Now, this Web Brower OPERA tested in Fedora29S..written by simmon
Does running it like this:
LD_LIBRARY_PATH=/usr/lib64/opera/opera opera
work?