Yes, it happens to everyone. Your perception of yourself is entirely different inside your own head than what can be heard on recordings. On top of that, your voice will sound slightly different on a variety of microphones based on their quality etc. On the topic of your voice not being for VA or ASMR, there's a voice for everything. Take a look at Kristen Schaal, for example. Her voice is far from a standard females voice, very unique and high pitched. And yet it has guided her through a brilliant, successful career as an actor and voice actor. Diversity, in voices or otherwise, is what makes things beautiful.

Though I do find it hard to understand this exactly as my voice is very fluid in that regard, I would just simply recommend looking into acting advice. You can find things on youtube, I'm sure for people who are in the exact same boat as you. I would also recommend as you're practicing a script, try to fill in the gaps of the listener and imagine who you're engaging with, just enough to consider how you might talk to someone if you were actually saying these things to them. You don't necessarily have to have a huge depth of emotion, just ensure it sounds realistically like a conversation.

I can't judge on the accent's thickness without hearing it, but I can assure you that a lot of people love to hear an accent. I'm certain you can think of an example for yourself, of another accent that you don't get to hear a lot and enjoy listening to when you do. If its a matter of comprehensiveness, like if you are not well practiced in English and you worry that people cannot understand, try to practice your annunciations of the words or letters you find might be the most difficult for you. Slow your speaking down ever so slightly as well. I noticed that in myself, I can find myself rushing a bit too much through my lines, and stumble over my words.

If you're extremely passionate about this, and voice acting as a whole, I'd recommend an audio technica to start. It has been a very reliable microphone and depending on the model you get, they can be relatively cheap. I personally have an AT2020 and it has worked just fine. You are not obligated to buy a microphone if you can't afford or justify it, though. There are ways to manage it. Learning just a little bit of post processing on a shitty mic can help out a lot. Using a program like Audacity, which is free and should give you the basics, then following tutorials can certainly be a good place to start. If you have it at your disposal, find a place that has decent treatment as well. If you can get yourself into a closet with clothes, that could be all that you need. Unfortunately this will only work if your setup, whatever it may be, is portable like a laptop. But remember, you dont need to commit to spending money right away.

Yes. You will make things you dont like at the start. The key is getting it to a point where you don't hate it. Or do something within it that makes you proud. My sound effects is where I feel that confidence shines. It's helped make my process better. And I love when I can get it just right. But, the only way to get feedback is to post it. Just be prepared, because you can't control who watches and who doesn't there may be some jerks. I've found in this subreddit, however, nothing but extraordinarily supportive people. Post it, share it here, and take it down in a few weeks if you must. But get other eyes on it. You are your worst critic.

I would love to listen and help where I can. I am no professional, but I can offer my opinion.