Welcome back to L19
Black 8 is bad. ( Sorry, but I had to say it

) The high approach is usually played when the side is bigger than the corner. This is definitely not the case on the open board, and especially not the case when white has a solid stone at C11. The low approach would be better.
10: Joseki is Q3. Your stone needs eyes someday.
15: You are lucky that he did not play M4.
16: Very nice exchange for you.
18: Good shape. But a tad slow. Now that he has forced you to strengthen your lower side group, maybe R8 is a good sente.
24: Big, but gote. But R8 is urgent. He is one move away from taking much of the right side.
34: Walking into a shortage of liberties. Instead, pull back with E16.
36: Good move. But now look at your G17 stone. What does it do? You would rather have it at G18 or F18 or H14 or B17, right?
50: Feels like a honte move. Slow, but I kinda like it. Now you can attack at full throttle.
54: Good idea: prepare the double attack. H3 might be a bit better.
68: Yes!
70: While you were gone, beating dead horses became a popular hobby around here. So I'm going to mention G17 again.
78: You're forcing him to connect two weak groups. Either G8 or G6.
80: G8!
84: G8!!
123: Gote. K1 gets you the eye in the same manner, but it also threatens his four stones. ( If he ignores, the kill starts with a throw-in at N1 )