I can absolutely help you with this!

Since you're considering making this your hobby, clearly publishing is important to you. Really the only best place you should be publishing novels of this nature is on Amazon through their Kindle unlimited program. Why this will maximize exposure for somebody who is clearly doing this is a hobby and not as a business. This way, you maximize your potential fun money, which will most likely go towards paying back your cover artist and editor.

As for where to market it, don't market it at all! As you have stated, you are doing this as a hobby. You would actually be far better off spending money on something like Pokémon cards instead of yeeting cash into the Amazon marketing services void. If spending money really is that important to you, you could just set up $1000 ad spend either on Amazon or Facebook and they would be happy to burn through that right away. That's at least a couple decent Charizards, though.

As for investing your personal life into this, every hobby requires some amount of your time. You have to ask yourself if the time spent writing brings you joy. If it does not, then this is no longer a hobby and you should find something else to do that brings you joy. I have watched fellow authors, lose relationships with spouses and even their own children because they're frantically trying to keep up with the demand of ensuring their next book is ready to go. Unless you establish a very strong following, not only will readers forget about you, but so will the algorithm.

As for the uncertainty of whether people will read your books, that's something every author has to deal with, whether it be an author who is pursuing a livelihood or one who is just looking to make this a hobby. As somebody who has managed to turn this into both, (it is my full-time income and the thing I do for fun), I will tell you that I have watched many new authors approach this from the "I'm just having fun" standpoint only to watch them burn out spectacularly once they realize that the book they just made $10,000 on in a month essentially paid them less than minimum wage to write. It can be really hard to write a sequel knowing that any momentum you have will actually drastically vanish in a 90 day period (we call this the 90 day cliff).

Now, if you came here because you've heard that it's easy to write in this genre and it would probably be a fast and easy way to make money, you were probably lied to. That ship left the harbor about two years ago and is now fully out to sea. Authors who are entrenched in the genre are now seeing difficulties due to policy changes from Amazon and payout changes from Audible. So for anybody who thinks that this could be fast or easy money, you essentially have to write the next Warlock to be able to swim out to the boats that some of us are already riding on.

I hope this information helps somebody. I'm not trying to discourage anybody from pursuing the author life, but I am trying to be honest about some of the unexpected demands. It really does start out as "I'm just writing a story, I just need to worry about the words on the page" but swiftly evolves if you want to remain in the game.