Fixing a minor plumbing problem can easily be $500 for a simple job, or $30 in parts and an informative video to do it yourself.
Sometimes it’s not a matter of not knowing how to but being unable to actually do that task the way a skilled professional could. I have some rubber gaskets that wore out on a toilet, and managed to introduce new leaks in the process of fixing it, after spending about $300 on tools and parts (I had to Dremel out the bolts holding the tank to the rest of it since they were completely corroded on, plus replacing more parts as things didn’t quite fit together and kept leaking, plus my wife bought some $50 bolt cutters that we couldn’t use in the right space) and I ended up having to call a plumber to fix both the original problem and my failed attempt to fix it
There is absolutely a skill component which you can improve with research (videos) and experience. For your exact situation, you many have considered buying a completely new toilet, which costs $100-$200.
And yes, sometimes you are going to fail. Use that experience to better yourself for next time. Watch what the professional you hired did, ask him questions, understand where you failed and become more knowledgeable/skilled in the process.
Sometimes it’s not a matter of not knowing how to but being unable to actually do that task the way a skilled professional could. I have some rubber gaskets that wore out on a toilet, and managed to introduce new leaks in the process of fixing it, after spending about $300 on tools and parts (I had to Dremel out the bolts holding the tank to the rest of it since they were completely corroded on, plus replacing more parts as things didn’t quite fit together and kept leaking, plus my wife bought some $50 bolt cutters that we couldn’t use in the right space) and I ended up having to call a plumber to fix both the original problem and my failed attempt to fix it
There is absolutely a skill component which you can improve with research (videos) and experience. For your exact situation, you many have considered buying a completely new toilet, which costs $100-$200.
And yes, sometimes you are going to fail. Use that experience to better yourself for next time. Watch what the professional you hired did, ask him questions, understand where you failed and become more knowledgeable/skilled in the process.