don't worry about deathstreams for now, you're still playing hard diffs so focus on your aim, reading and accuracy (although your acc is already pretty good), and maybe start playing some insane diffs bc you're already doing hard diffs pretty well
expect some 9-note bursts for lower insanes, and much higher jump spacing, lower insanes also tend to be lower bpm (unless if it's a 'hyper' or 'light insane'), deathstreams don't really come up until 5*