HI,
I already have the source code of Rummy game with the following features. connect me on chat if you want to see the demo.
2/6 players
Photon multiplayer
Different game modes
101 pool
201 pool
13 card Rummy
Point rummy
Native share
Android toast message
Level 1 bots
Photon multiplayer chat
It also has scripts for APIController, Smart bots, End screen, FB Login, Unity ads, google ads, BO2, BO3, In-app purchases (But all these scripts have few bugs in it.) you can use these scripts to build your logic further.
Cost is negotiable so feel free to contact me. I will be happy to help you.