Help with weight gain diet

So I’m 21(M) 5’10 and 145 lbs. the thing with most diets is they have fruits and avocados involved which I am severely allergic to. I’m a newbie to this process and would appreciate the help a ton. I just don’t want to start on the wrong foot and waste money on food that won’t help the situation. TIA

submitted by /u/gswish118
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