One thing I always keep in mind is that you don't need to make any complex basslines. Even if you have a bass note on every 4 bars, sometimes that's enough. Personally I have my own ways of doing basslines, it's hard to explain it. But I would suggest starting off by putting a bass note at the beginning of every bar, then just build from there. Add another note right before the 3rd, stuff like that. Just get the basic foundation first, then build.