Loopers in general are not as good at defending themselfes like blocking. You say that they are good at lobbing but i still think you have a big chance to win here. So maybe you can try to loop yourself, and then many will block again and you can try to loop harder or with good placement so you keep them under pressure. If they go back at once maybe you can try to return short to make them move forward, then loop wide to the corners or the pocket so they need to move in and out. You can also try looping the first loop soft and if they move out at once, they maybe are not so fast to go in again, so they will let the ball drop down and lob it in so you an attack. And if they start to lobbing and you can not hit through them you can try a dropshot or smash at the bounce. Also here, good placement and variation in tempo is important to make it hard for them. So try attack yourself with good placemnt and moving them alot in and out.
And if they always loop first and you start blocking you need to vary the pace and the placement to make it harder for them. The same pace and placement and they can loop forever and also hard. Same thing here, if you play harder maybe they will move further back and if you play shorter soft, and they do not move in well you will get an easy ball to attack. If they in general are to far back they maybe hit tha ball under the highest point, and then they can not loop hard and are forced to loop softer with a high arc to get the ball over the net, if you are ready for this you can counterattack this and get the advantage.
You also need to notice if they are Bh players or Fh players. If they are bh players you want to return and play alot in their pocket. If they are fh players you want to return and play in the corners.
Against every player i think you should try to play your playing style, but also try to find their weakness, tro different serves, see if they are good against short returns, opening with backhand or forehand, are they better with bh or fh, better to attack themselfes or when they get speed against them and so on. You get the point. I also think it is important to see the patterns, many people return and play the same way over and over. And also to try to see how you play when you win and keep doing that, and if you are loosing, try to change the play and try something different. So if you play these kind of players alot, try different things to see what works.
Another idea is that try to look how other players that win over them, how they play and try to do the same. Or maybe watch the pros, how they play against this kind of playing style.
Maybe you also can try to film a match, and see how you are playing against them. Easier to analyze when you look at it, harder when you play.