How to sell lego

I lived and breathed Lego the past year or so to the point it’s caused me mass anxiety. I’m almost sold on selling off my collection which is probably only around 3k. I’m just not sure how to sell it all. without losing more than Id like.Any ideas? The big issues is the mini-figure sets such as speed champions I’ve customized the figures and other creator sets exc as well. I’ve sold off some minifigures so I know the sets are less valuable. For the most part I’m a perfectionist and like to think I have a great collection: So any help or any interest please let me know. I have a Lego and materialism addiction and that why I’m considering just offing it all to the best of my ability. I’m from Florida.