Minecraft crashes when i click singleplayer

Please help. I started playing minecraft again for the past couple weeks, and everything was going just fine. But ever since yesterday, Minecraft crashes every time I press single player on the menu screen. I can click on multiplayer and option ect. but for whatever reason it crashes when i click single player. it doesnt even show any of my worls. I've tried deleting and re-installing Minecraft and Java to no avail. It happens with every version of minecraft. Even the new 1.16.1 (which is what this crash report is from.)
Anyways, here is the crash report:

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 7/14/20 6:11 PM
Description: mouseClicked event handler

java.lang.OutOfMemoryError: Java heap space
at java.util.ArrayList.<init>(ArrayList.java:152)
at com.google.common.collect.Lists.newArrayListWithCapacity(Lists.java:190)
at lk$1.a(SourceFile:47)
at lk$1.b(SourceFile:32)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at lo.a(SourceFile:96)
at lo.a(SourceFile:63)
at lo.a(SourceFile:26)
at dae.a(SourceFile:222)
at dae$$Lambda$2893/144931946.apply(Unknown Source)
at dae.a(SourceFile:171)
at dae.b(SourceFile:150)
at duf.a(SourceFile:85)
at duf.<init>(SourceFile:77)
at duc.b(SourceFile:48)
at dqs.b(SourceFile:321)
at dlx.a(SourceFile:895)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Render thread
Stacktrace:
at java.util.ArrayList.<init>(ArrayList.java:152)
at com.google.common.collect.Lists.newArrayListWithCapacity(Lists.java:190)
at lk$1.a(SourceFile:47)
at lk$1.b(SourceFile:32)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)

-- Affected screen --
Details:
Screen name: dqw
Stacktrace:
at dqs.a(SourceFile:434)
at dly.a(SourceFile:92)
at dly.c(SourceFile:162)
at dly$$Lambda$2878/1041115776.run(Unknown Source)
at amn.execute(SourceFile:94)
at dly.b(SourceFile:162)
at dly$$Lambda$2230/1321173721.invoke(Unknown Source)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3101)
at com.mojang.blaze3d.systems.RenderSystem.flipFrame(SourceFile:109)
at dgy.e(SourceFile:308)
at dlx.e(SourceFile:1041)
at dlx.e(SourceFile:654)
at net.minecraft.client.main.Main.main(SourceFile:215)

-- System Details --
Details:
Minecraft Version: 1.16.1
Minecraft Version ID: 1.16.1
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 493883328 bytes (471 MB) / 704643072 bytes (672 MB) up to 2147483648 bytes (2048 MB)
CPUs: 4
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Launched Version: 1.16.1
Backend library: LWJGL version 3.2.2 build 10
Backend API: Intel(R) HD Graphics 4400 GL version 4.3.0 - Build 20.19.15.4531, Intel
GL Caps: Using framebuffer using OpenGL 3.0
Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
CPU: 4x Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz

If anyone could help me out, it would be greatly appreciated, thank you!