Help with quick indexing in Google

Hello! I am looking for a professional in SEO, I have various websites. I need ongoing different consultations. If you help me solve this problem, we will work on a permanent basis. Plus, I will recommend you to my clients. Because I am a marketer. And my clients constantly ask for a good SEO specialist. 

The site is a store. My domain is 20 years old, good DR according to Ahrefs. I added a blog to my site. I want to publish more than 10 articles a day. For manual submission of 10 requests, Google’s daily quota. Articles are perfectly indexed when manually submitted from Google Console. I wanted to speed it up. I set up the API. Response code 200. Type OK. But the result from this API is just 0000. Pages do not get indexed. They go manually. They do not go through the API. The API works correctly! 

SEO specialists talked about ping services and so on. I tried pings, complete nonsense. API services ask for full owner access. Somehow not very good, I understand that they need owner access. But I worry about losing access to my account. They work through the API. And now the most interesting part! The API is not working anymore. I read on Google about the US results. It seems Google has shut down this functionality. Maybe they started spamming. So it’s not surprising why my API gives no results! That’s why I worry whether it makes sense to give any service full owner access. After all, they will do what I wanted to do myself! I don’t even know how and why it works for them. Maybe they are scamming people...

Help me connect at least something that works for you to this day. So that I could at least push 100 pages into the index. Even if they take a whole week to get there. As long as it works. Because I don’t know what to do. I won’t even mention the sitemap. It’s useless. Google processes it very slowly. No use at all 00000. 

I am generally surprised why Google treats this so stupidly. Couldn’t they do it properly? And that limits could be purchased. Then no one would spam. Such a large system, yet they approach this so stupidly. I would be grateful for any help from you! Write your thoughts in the proposal. And what works for you now for fast indexing. What can you connect for me. Thank you for your attention!