How do you fix minor leaks in seamless aluminum eavestroughs?

I noticed some tiny leaks in my seamless aluminum eavestroughs, and with all the rain we’ve had this spring, the drips are starting to drive me nuts. I’m not looking to replace the whole thing or call in a pro if I can help it, just something I can do myself that’ll actually last. Never messed with gutters before, but I’m handy enough with basic tools. Anyone got tips or product recommendations that actually work in 2026? Don’t want to make things worse or create a patchy eyesore. Appreciate any firsthand experiences or common mistakes to avoid!