I threw together some quick ideas after one look at the game: https://online-go.com/review/378385
It is no way an in-depth review, so if anyone wants to do something more detailed, feel free but I think it was a good example to find some potential core problems.
You talked about big moves, yet it seemed to me in your game you still wasted tons of moves on very small things. I tried to point out those places.
Just because a move is forcing or sente does NOT make it good. Again I tried to point out several instances where you played a move that was sente but brought you almost none or literally none profit, while your opponent got to solidify a lot of points, removed aji from his position or otherwise profited. It may feel good playing those moves, because one can feel like he/she is “in control” of the game, but what is the point of forcing a deal your opponent is getting the better end of…
Your play seems very passive. Building for yourself without bothering the other player. This may work against weaker players if you are just building large enough moyo, but will usually fail against stronger players, especially if you are playing white. Black often has the better opportunity to build something bigger (if you do not contest him/her) as he/she had the first move.
In endgame sente is super important. Sente moves first
Ultimatelly if you understood all the points above the problem may lie in your ability to estimate the board. It was clear quite soon that black’s moyo is much bigger than white’s, yet you seemed to not try and reduce/invade. I am not telling you to actually count the game, but every now and then, try to estimate what is bigger than what, and base your next move on that estimate. If you are behind you have to try and attack more actively.
Hope it helps.