IMO, option #1:
Learn to use a whetstone. Knifewear has posted live streams of how to sharpen. I'd check them out. I took their class right before this started, and it was excellent, but the videos are a pretty good substitute. They have a trick on how to judge the angle, and eventually you'll get used to it and it'll just be muscle memory. You won't always be exactly 15 degrees. You might be 14. Might be 16. But you'll be close. That's why most knife instructions suggest always having the same person sharpen the knives.
Option #2:
Buy a blade angle guide.
It's more cumbersome. Will take longer. Your knife snob friends will laugh at you. But it'll do.
I didn't research this one - but this is the basic idea:
https://www.amazon.ca/Whetstone-Knif...s%2C214&sr=8-6
Option #3 - Knifewear is still doing mail in sharpening. If you're super uncomfortable doing it, I'd look into that. You won't have your knife for a bit, but they're still sharpening.
Option #4 - Run your knives until they're dull. Throw them out and buy new ones. That is still a better option than buying an electric sharpener.