Learn About 2-Way Radios

Is there any way to boost the operating range of a 49 MHz toy Walkie Talkie?
And if there isn’t a way to boost one of these low-powered radios, then why was it made like that?
Is there any other device with that frequency but longer range? The only other devices I know are old cordless phones [...]

Longer range than FRS radio

FRS radios are cheap to buy and they don’t require a license from the FCC. They are also fairly short-range radios. And there are reasons for this.