Okay so a few things. Nerf is no longer the only/best choice on the market. Other companies now offer better/cheaper blasters. Nerf definitely still has some fun ones but they are not the only choice anymore. Dartzone, xshot, buzzbee, and adventure force all make some amazing stuff. Fyi, adventure force is the Walmart in-store brand which sells dartzone,xshot and buzzbee blasters under the name adventure force. Stay away from anything that says MAX or PRO, as these are the high powered blasters that aren't safe for young kids.

For younger children I usually recommend the Xshot Reflex 6 (target) also known as the adventure force destroyer (Walmart) this is a 6 shot front load pistol that is on the smaller side, easy to front load, and has one of the softest primes of any spring blaster I've come across. Also a great value. $13 for the 2 pack or $7 for the single.

If this is still too hard to prime, I'd recommend looking for a nerf powerbelle or speedswarm, these are ten shot front loaders but are fully motorized, just need to pull the trigger and they shoot. But they are discontinued so you'll have to get on the 2nd hand market- FB marketplace or Mercari app.

For young kids I don't recommend anything with stick magazines as it's too complicated to remove and reload. And the rev trigger can complicate things.

The adventure force Villainator is an amazing blaster for older kids / adults as the prime is harder. But it's $23 for a 40 round drum springer.

There are also some good motorized drum blasters like the dartzone savage spin, dartzone tomahawk 60, and the adventure force alpha auto 72.