The heat does take out some of the taste. You could just chop it fresh and add it to your sauce; that would help give you more straight garlic flavor. You can eat garlic raw - no problems. Just don’t breathe on anyone, LOL!
I like to make Roasted Garlic Paste; I like the rich, nutty flavor roasting adds. You can use it in a lot of ways, too. It takes a little work, not much, but you do need an oven. Since you said you only boil or fry, is it because of a lack of an oven?
If you DO have one, or can use an oven somewhere, try this and see what you think:
https://www.thespruceeats.com/roasted-garlic-paste-1664932
I will try that next time I make spaghetti.
I boil the spaghetti in a pot, then use a colander to get the water out and put the spahetti back into the hot pot.
I pour the sauce into a fry pan and heat it up, and then pour the heated sauce into the spaghetti pot and stir it up.
I will put the garlic cloves into the heated up sauce and give it a try.
I try to keep my meals simple, so I will eat right out of the pot. -Tom