IME you don't need much in the way of FX.
You want to lay a deep, even tone throughout.
Your amp's eq should let you cut treble well enough.
Depending on your technique you may want fo engage a compressor.
Which brings us to technique: play cleanly without fret noise or clang, pluck near the neck or even over the fretboard, focus on a smooth gentle touch on the right hand, let the amp do the heavy lifting, and most important: put a lot of feeling into it, feel the beat, play from the heart and not so much from the mind.
You want to lay a deep, even tone throughout.
Your amp's eq should let you cut treble well enough.
Depending on your technique you may want fo engage a compressor.
Which brings us to technique: play cleanly without fret noise or clang, pluck near the neck or even over the fretboard, focus on a smooth gentle touch on the right hand, let the amp do the heavy lifting, and most important: put a lot of feeling into it, feel the beat, play from the heart and not so much from the mind.