There’s a lot of general advice I can give you, sure. Professional games can help, as can playing against more skilled players and reviewing the game afterward.
Openings can be hard. They’re not as cut-and-dry as fights or endgame counting. and require you to get a feel for setting up your stones across an enormous area to prepare for the next phase.
Remember that plays on the fourth line are best suited to influence toward the center, and plays on the third line are best suited to establishing territory along the sides or corners. I point this out because it’s extremely common among DDKs to see one play on the fourth, such as with a 4-4 opening, and then lament when their opponent plays beneath them, as if their territory was “stolen” from them. That’s a distressing way of looking at thing! As long as you got a wall on the fourth line facing a direction, you got just as much as your opponent did, in most cases.
The final piece of advice I can give, based on the play I saw in the first ~50 moves or so of your game, is that 90% of the time, you should never play on the second or first line during Opening. Pretty much the only times you would do this are if such a move is vital to give a cut-off group shape, or to establish an eye if a fight is impending (in opening… for… whatever reason)
The white player peppered SO many moves on the second line on the bottom there. I imagine you felt like he was stealing your territory away from you, but in truth, like I said above, that’s a time when you should be happy because you had a long wall facing the center, which was worth WAY more than second line territory.
Oh! I hate to say “Study Joseki”, since a lot of players interpret that to mean “memorize joseki” and the advice ultimately hurts their game. With that said, there really is some merit to studying the standard lines of play. Rather than focusing on memorizing them, though, try to understand the logic behind why each move is made. It’ll be a tall order at first, and you may need the help of a stronger player to get the hang of it, but if you keep playing and studying, it’ll all click into place.