Hello,
When I got stuck to writing bassline, sometimes I used the MIDI pattern from Session Bassist instruments and used other sound/instrument with it.
Just choose random presets from Session Bassist (in my case Prime Bass), then drag the midi (use the drag icon) from the plugin to your DAW.
Drag multiple midi patterns from multiple presets, combine and edit them for more fun!
Altough it seems like a cheating, but I always have great result with it!
You can also build lead lines from it lol
Another tip : use Monark synth for the new sound 😉