I'm planning on buying my first electric guitar - any buying advice?

I’ve been playing acoustic guitar for a few months and I would like to purchase my first electric guitar. I’m not looking to spend too much on the guitar, amp, and accessories (<$300) but I would still like a solid guitar that can last me for several years. A few key questions I hope to address are:

What specs should I be looking at, and what should I aim for in a beginner’s guitar?

Any suggested brands?

Are beginner’s kits decent enough quality, or should spend a little more and buy the guitar, amp, and accessories separately?

Any other advice?

Thanks, and let me know if you have any questions,

Cameron