How to attach to electrical subpanel?
I'd do (and have done) Ed's suggestion of up the wall a then LB (or LR, LL) straight into the back of the box. It works, no fuss, no muss.

If you want to come in lower for some reason, I'd stay with PVC on the exterior but transition to a metallic product (EMT, IMC, RMC) once in out of the weather. Among other things, a lot more compact than their PVC friends for the same "size product"

A handy thing I've only just now seen in PVC (but was familiar with from metal) is a "pulling elbow." Oddly called an "access elbow" for some reason in PVC?



Those are a lot more compact than an LB.

Making some assumptions about your wire insulation, I also see that your conduit fill % is quite low (generally good for pulling) but that does mean you could switch to a smaller size for the presumably short section inside the building without violating 40% fill. 1-1/4 EMT or PVC-40 would appear to work (with the assumptions I'm making, basically XHHW insulation) - you need PVC 80 where subject to physical damage, but if you are already in 2" outside that's fine if the inside is protected by being in the wall.