I would like to meet Michael Schumacher (he/who is not dead, but it's supposeaid that he can't do anything by himself), because I love F1 and motorsport in general.

(1) For the phrase in parentheses, you still need to reference the subject, through the use of "he" or "who".
(2) The use of "supposed" doesn't sound the most natural to me here, as it also implies a lack of proof or evidence for the claim.

I would like to ask him what does he thinks made him one of the best drivers in history.

"What does" is used for direct speech but not indirect speech, and here, you're writing indirect speech.

DIRECT SPEECH
I would like to ask, "What does he think?" ✅
I would like to ask, "What he thinks?" ❌

INDIRECT SPEECH
I would like to ask what does he think. ❌
I would like to ask what he thinks. ✅

Also I would like to ask him about funny stories he liv's experienced, and I'd ask him about some technical aspects inof F1 about the car and telemetry, because I'm interested in thato.

(1) Alternatively: "...about funny stories he's lived through", but "live through" typically has the additional implication that said stories were also unpleasant and difficult times for him, which you might not want.
(2) The phrase is "aspects of", and not "aspects in".
(3) The phrase is "interested in (something)", not "interested into (something). You also need a word like "that" to specify what it is that you're interested in.

I would like to meet Michael Schumacher (he is not dead, but it's supposed that he can't do anything by himself), because I love F1 and motorsport in general.

Also I would like to ask him about funny stories he has lived through, and I'd ask him about some technical aspects in F1 about the car and telemetry, because I'm interested in thato.