Sprinkler and irrigation issues

[Vespertino]

So this morning I ran some tests on my sprinkler system to figure out where some of my recessed sprinkler heads were. I discovered a busted pipe and 12 foot geyser, misaligned heads, and several risers stuck underground causing water to pool and bubble.

I don't know quite how long it's been like this (I set my system to run at 4am), but I'm wondering:

Can I fix them on my own? Or is this something that isn't ideal for the DIY? I don't have a lot of free time, career takes up most of my life. But I can manage a few hours in the yard on weekends.

If it's not a DIY, I'm wondering if anyone knows how much extra it would to add a new zone, or move some sprinkler to other zones.

I don't like how the zones were planned for the back yard, I was hoping to chop a few zones apart. The beds around the house (which need to be watered every day in the summer due to clay soil and foundation issues) are connected to some lawn sprinklers and I want to segment them off. Same goes for the sprinklers around the fence perimeter which I'm hoping to eventually convert to irrigated raised beds ,but plan to install an RGGS in the interim.

The fence permimeter I was hoping to convert to irrigated raised beds in the distant future, but use a RGGS for now. At the moment I have to dance around the sprinkler placement

Any advice? Has anyone else been there?