My question is from grammar part whether we can use two conjunction or not like this? [migrated]

Solution 1:

There is no rule that says you can only use a single conjunction in a sentence. Your sentence is not incorrect for having both "because" and "and".

Writers use long and complex sentences with multiple conjucntions: Here is a very long example from Lolita

“My very photogenic mother died in a freak accident (picnic, lightning) when I was three, and, save for a pocket of warmth in the darkest past, nothing of her subsists within the hollows and dells of memory, over which, if you can still stand my style (I am writing under observation), the sun of my infancy had set: surely, you all know those redolent remnants of day suspended, with the midges, about some hedge in bloom or suddenly entered and traversed by the rambler, at the bottom of a hill, in the summer dusk; a furry warmth, golden midges.

You can find subordinate clauses such as "when I was three" "if you can still stand my style"; coordinate phrases "entered and traversed", "My ... mother died ... and, ..., nothing of her subsists..."