Super Real Tennis (SE, original) - Fix FOUND
Not sure where to post it, so I'll leave it here (since it's the only emulator where the game works!)
- Download the game ( here, for example)
If you try to run the game at this point, it will crash

- Edit
MANIFEST.MF, add the following lines
MIDlet-Data-Size: 256
Encode:NONE
Languages:5
Txt_File0:txt/english.txt
Txt_File1:txt/french.txt
Txt_File2:txt/german.txt
Txt_File3:txt/spanish.txt
Txt_File4:txt/italian.txt
Fonts:3
FontHeight0:14
FontHeight1:16
FontHeight2:20
Mode:ENGLISH
- Now install the game and it runs smoothly😊

Here is the modded version that now runs (zipped, version changed to 1.0.5.1 to avoid ambiguity), enjoy srt-1051.zip
Hopefully to be useful for the future
In such cases, installation via JAD usually helps.
The original JAD contains the required additional parameters and the emulator applies them during installation.
You can also create a JAD, for example with JADMaker, add missing parameters and install through it.
Additional parameters are non-standard: the names, values and quantities are solely the will of the game developer - therefore, it is the original, and not the homemade JAD that is needed to find out what parameters this particular game needs.
P.S. For solutions and tutorials, you can create and edit wiki pages: https://github.com/woesss/JL-Mod/wiki
Hi! Download this game today and had the same problem. But even trying your fixed version, the game runs but when I try to start a match, the game keeps on the same light blue screen forever. Can You help me?
@jgfernog, create a new issue: specify emulator version, your device model.
Launch game, in problem area open menu->[Common settings]->save log and attach file log.txt from emulator working directory.