How to allocate more RAM

Check out a tutorial for your respective launcher:

https://www.bisecthosting.com/clients/index.php?rp=/knowledgebase/307/How-to-allocate-more-ram-in-the-ATLauncher.html

ATLauncher

https://www.bisecthosting.com/clients/index.php?rp=/knowledgebase/305/How-to-allocate-more-ram-in-the-CurseForge-launcher.html

CurseForge launcher

https://www.bisecthosting.com/clients/index.php?rp=/knowledgebase/573/How-to-allocate-more-ram-in-the-Modrinth-launcher.html

Modrinth launcher

https://www.bisecthosting.com/clients/index.php?rp=/knowledgebase/613/How-to-allocate-more-ram-in-the-MultiMC-launcher.html

MultiMC launcher

https://www.bisecthosting.com/clients/index.php?rp=/knowledgebase/306/How-to-allocate-more-ram-within-GDLauncher.html

GDLauncher