questions about sex toys: would it be a bad idea to fully insert a vibrating egg in my bum?

I don't know if this is an appropriate question for this community, so mods, remove if needed.

The idea would be to fully insert the egg inside my bum to massage my prostate. Most of the eggs I'm considering have a cord at one end so you can slide it out when you're done. There are however things to consider:

Vibrating eggs are made of several parts, the cord usually attached to a piece of plastic attached to the main body of the toy, usually made of silicone. I fear the toy will break inside of me. OTOH I can relax my sphincter before taking the toy off.

Some other eggs can be used with 2 aaa batteries, main body also made of silicone. However, the models I found online don't seem to have a screw top. I don't see how the egg won't leave the cap inside of me.

The bigger and larger the better? Vibrating eggs I'm considering are on the 1" - 1.25" diameter range and 2.75" length range. Some other prostate massagers are much smaller, but I don't think they would make me feel anything.

There are also usb rechargeable eggs. Some of these have the charging port on the main body, meaning it goes inside of you when you use it. How can this be hygienic? I don't see how this can be easy to clean and last long (humidity and electricity don't combine well).

There are also cable connected eggs where you put the aaa batteries in the remote. After using it, I'd have to pull the cable when I'm done. Is this safe? I don't see how this item can last long if I have to pull the power cord each time I use it.

the more expensive the better? price ranges from $8 (power corded eggs where you provide the aaa batteries) to $45 (usb rechargeable egg with charging port at the end that won't go inside of you).