If you replace it, try to find a used oem axle, and reboot and regrease it. Aftermarket axles are junk.
What I do is clean, regrease, reboot a spare one, then make the swap.
The hard part depends.... you have to get the knuckle disconnected from the lower ball joint, or the strut disconnected from the knuckle to get enough movement to get the axle out.
Some of them press out easily, almost just by hand, some need a big gear puller (or a soft face dead blow hammer ) to push out. Bearing don't like impact, so never hit anything in a way the transfers metal on metal impact to bearings.
A big factor is how rusty are things underneath? Use liquid wrench or airokroil a day or so before on the suspension bolts, etc. Brake caliper mounting bolts.
The first time or 2 this job can be a bit slow, but it doesn't bother me at all now.
Road salt can make things pretty difficult. Anti seize everything when re assembling, and any future work will be noticably easier . Go on the light end of torque range when using anti seize.
For the transmission end of the axle - get the correct size drift! The pins are hollow roll pins, if you use one a size too small, it will drive into the hole and jam incredibly tightly making a nightmare you don't want or need.
When assembling, verify the holes line up , as the axle will slip on the splines, but there is only one orientation where the holes line up straight.
If everything is normal roll pins don't need big blows to move.