I'm just gonna repeat what these peeps said, but with slight more detail
I almost never judge one by PP, so I took a quick look at your profile to see any plays you have done this week.
https://osu.ppy.sh/b/1215541?m=0 You got an A on this, with SD.
6 days ago, you got a C in
https://osu.ppy.sh/b/966335?m=0Now any 6*+ players will tell you that if they tried to play those maps, it would probably be a sight read FC with high accuracy. Seriously, even a 70k scrub like me can get an A if not S on almost any 4*, none-gimick maps you throw at me.
It's good that you realised playing at 6+* is not a very good idea, but the trouble I found around your rank is, "what difficulty map should I be playing at?"
First off, get lots of maps. Like, LOTS of them. At least 1 thousand at every star range up to 6*
I would say you need to play maps that you get AT THE MOST LEAST 85%. This might be too low for some of the oldies lurking around here but I say that acc is because you're about the level where you need to learn new patterns as well as co-ordinate your aim/tap and all these other stuff. And when you are learning, you just don't have the concentration to 99% everything. However, in general, you should aim for 90%+, because that will ensure you know which notes are a miss and which notes are a hit and learn accordingly.
As for the original question, the triples in the middle of jumps. To hit those, you need to "aim along with the rhythm". What this means is, you snap your cursor according to the beat/rhythm of the song, this will allow you to keep track of the notes and not get confused. To be able to do that, however, you need to know what is going on in the first place. These are slightly harder to aim because it requires more control since you need to stop for a brief moment then continue with the flow/momentum of the jumps. In some cases, the 2 notes are placed before the "jump note", this means you need to aim twice as fast on that specific jump to hit those.
Either way, you will get there with enough
correct practise, and by then, you will have enough aim to practise/play the triples.