Correct. The Theory of Evolution, states that present day life evolved from more primitive life.
Learn what a 'fact' is. A 'fact' is not a Universal Truth.
Learn what knowledge is. Knowledge is not a Universal Truth.
Observations are not a proof. They are subject to the problems of phenomenology.
Supporting evidence is not a proof. Literally mountains of it proves nothing. A single piece of conflicting evidence will nullify all of it. Science only uses conflicting evidence.
The Theory of Evolution is not a theory of science. It is not falsifiable. There is no possible way to test it other than going back in time to see what actually happened.
Oh you are just babbling nonsense. The modern theory of evolution does not state that life evolved from primitive forms. That's your misinterpretation. You're just simply wrong and don't know what you're talking about and it's as simple as that. Evolutionary theory predicts that species living today have common ancestors and the facts, to the best of our knowledge, bear that out.
and while were on the subject of learning, learn what science is. It is not whatever you want to define it as to meet your purposes or world view. Virtually every claim you make is not only not supportable by the facts as we know them, they are arguments from ignorance.
The Theory of Biological evolution one of the most useful and thoroughly test scientific theories and it meets all the criteria of a scientific theory despite your false claims as to other wise.
A scientific theory is defined as;
A scientific theory is a well-substantiated explanation of some aspect of the natural world,
based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world. (ref: Wikipedia).
To considered a scientific theory it must;
Model natural phenomena.
Be falsifiable in principle.
Make testable predictions.
Be based on empirically observable fact.
Be independently verifiable.
Be published and peer reviewed.
It must have a high probability of being correct
Can be revised or modified based upon new evidence or discoveries.
The Theory of Biological Evolution by means of natural selection not only easily meets all these criteria of a scientific theory and it is one of the most profoundly useful scientific theories discovered by man with a vast array of applications and uses (a fact you seem to be avoiding).
So no Biologist is looking for absolute truth's, that's what you appear to be doing. We, like any other scientist are looking for what are the facts to the best our our knowledge and how do they explain how living systems work.