They were right to say that you need to read a lot. At one time I read avidly everything in a row, and there was a great effect. Even in terms of essays, the situation has improved significantly (I did not notice this, the teacher noted). The gears move, wit flows like a river. Well, it all ends someday. Eh heh ... A period without books + primitive communication "for fun" - hello, degradation.) P.S. Well, that's the case for me, for others, I'm sure things are better.
In addition to technology, content is important. You can't even build a beautiful sentence with a lexicon of one and a half words :) Read, read a lot, read varied, read aloud.
First, you need to take it as an axiom that for a beautiful speech you need training and you cannot make a "perfect" speech in one day.
For a start, if you do not pronounce words, swallow endings or have other speech defects, you can try talking in a slow voice for a month, with absolutely everyone, so that you get the feeling that you are talking like down. At the same time, speech should look natural.
You can also learn poetry by heart, read aloud, practice tongue twisters.
To expand the range of the voice, strengthen the strength of the voice, work will be an important aspect over breathing. Correct breathing allows us not to be nervous during a performance and to convey our thoughts to others with an even timbre.
There are many exercises that help to put diction, breathing correctly, add beauty to the voice, etc. To do this, watch videos of famous announcers and orators (for example, Levitan and Stanislavsky), do various exercises to develop speech, speak in front of the public more often and most importantly - make a habit of training every day, because any skill comes with experience!
I can't speak beautifully: I often stumble, I forget words, I can't tell big stories brightly and continuously. Why is this happening and how to get rid of it?