Welcome and nice nuts.

Hand #1. The idea is to make 'em overpay for the draw, not spook them off. Put a price you think is fair enough for you to dump or check/call if the draw hits. I would have raised it to $3-$5. You want callers when you're ahead in the hand. A couple callers for $2 more would have had a big effect on your net return for the hand in exchange for a 1 in 5 shot at the backdoor flush (if anyone even has it!)

Hand #2. Well played. It's tough going all-in against a raiser in front with a full house or better straight (J8) beating you and 6 players having limped in.