In general you are not going to get a 25% to 50% raise if you are staying within the company. They will try to nickel and dime you. “Oh, how about a nickel increase in your per hour?”. Hahahaha. If you have an actual job offer and an amount, then they might try to match it if they like you enough, but that’s about it.
That being said, I was able to get a 30% raise when I changed my job last year. My wife was about to get a 25% raise when she did the same.