However when I ride frontside it's a different ballpark and I feel so uncomfortable riding fs as of now. What would you advise to practice/do to get good at frontside pumping/carving and just flowing around?
The most common things that will help are to stay low and look over your shoulder when you turn frontside, as in look where you are going, turn your upper body which in turn will get the rest of you and your board turning too, but by staying low and keeping your weight centered you can stay on your board. As soon as you end up on your back foot, you are more likely to manual and slip out of whatever it is you are doing.
Also (this comes back to the basics on flat ground but it is worth a mention) when you turn, lean into it, so if you are turning backside, you put more weight on your toe side before you turn. For frontside, you must get more weight on to your heel side, then look over your shoulder, lift to turn but then make sure you get those front wheels back down, make a noise with them hitting the ground and stay compressed - lower to the ground - which will keep your weight over the board more than on your back foot.
This will help with getting your turns a lot better on anything going frontside and in turn getting any frontside tricks too, but usually low carving turns on mellow transition are the best way to get your balance and confidence up. Also doing frontside turns at the top of banks will get you more used to getting the feeling of the board going over the lip of ramps too, which can often throw your balance off once you get them up higher on transition with big coping or a concrete edge.