You seem to be missing a low slot in your posted fit.
Using hardeners specific to the mission you are running would be better than trying to account for all resistances.
Purger rigs won't do much by themselves, extender rigs will be better in this case.

Make sure you are moving, orbiting your target or even a stationary object, keeps up transversal, this will equate to less damage being taken.

[Caracal, Lvl2]
Ballistic Control System I
Ballistic Control System I
Ballistic Control System I
F85 Peripheral Damage System I

Large F-S9 Regolith Shield Induction
Large F-S9 Regolith Shield Induction
Limited Kinetic Deflection Field I <--Switch Depending on mission
Limited Thermic Dissipation Field I <--Switch Depending on mission
Experimental 10MN Afterburner I

Experimental SV-2000 Rapid Light Missile Launcher, Caldari Navy Inferno Light Missile
Experimental SV-2000 Rapid Light Missile Launcher, Caldari Navy Inferno Light Missile
Experimental SV-2000 Rapid Light Missile Launcher, Caldari Navy Inferno Light Missile
Experimental SV-2000 Rapid Light Missile Launcher, Caldari Navy Inferno Light Missile
Experimental SV-2000 Rapid Light Missile Launcher, Caldari Navy Inferno Light Missile

Medium Core Defense Field Extender I
Medium Core Defense Field Extender I
Medium Core Defense Field Extender I

Rapid Lights aren't great in PvE because of the long reload time, you're better off in a Corax.

Low skilled missile PVE took a huge hit with the RLML change.

The low skills of a new player (low dmg, no T2, bad fitting so can't fit optimal layout) mean that the RLML reload is worth much less than that of someone with good skills. Meaning, their reload likely isn't enough for many L2 missions. (And even if it is, this is a very early stage to be dealing with the joy of volley counting.)

However, the difference in clear speed between the missions that can be cleared in a single reload and doing those missions in a sniper/kite Corax is huge. LM were already very slow firing before, and now they're even slower.

You could of course up weapon the Caracal to HM, or perhaps HAM (though fitting them would likely be a pain for low skills), but without the newbro dropping a comparative tonne of ISK on application rigs it wouldn't be worth it. The ship would however be ready for L3 missions, though with the low skills of a new player it almost certainly couldn't survive them.

--

All that bleargh aside, if I was going to do L2 missions with missiles I would use a Corax or a Talwar.

ok in that case, could you recommend a fitting for a corax?

Perhaps something like that

[Corax, PVE lowskill]
Ballistic Control System I
Micro Auxiliary Power Core I

Medium F-S9 Regolith Shield Induction
Limited Adaptive Invulnerability Field I
Upgraded EM Ward Amplifier I
Experimental 1MN Afterburner I

Compact Light Missile Launcher, Scourge Light Missile
Compact Light Missile Launcher, Scourge Light Missile
Compact Light Missile Launcher, Scourge Light Missile
Compact Light Missile Launcher, Scourge Light Missile
Compact Light Missile Launcher, Scourge Light Missile
Compact Light Missile Launcher, Scourge Light Missile
Compact Light Missile Launcher, Scourge Light Missile

Small Anti-Thermal Screen Reinforcer I
Small Core Defense Field Purger I
Small Ancillary Current Router I

With good skills you could get rid of the Micro Auxiliary Power Coreor the Small Ancillary Current Router.
Maybe upgrade the launchers to Ample.