It’s tautological. However, it’s a common enough phrase that people accept.
It’s a fairly common phenomenon in language that as a word starts to feel weaker, people add riders to it to draw attention to it. Hence, ‘from past experience’ or ‘from previous experience’ help to accentuate the word.
Quite a few people like to denigrate this kind of thing, but given how ubiquitous it is, I think it’s obvious it’s an important element in the evolution of speech. Maybe it’s not something you’d use in the most elegant writing, but it’s fine in conversation.
A Forum such as Naim’s, is basically a place for conversation.