Need expert advice on performance of my website

Hi all!

Not so sure if this is common practice, but I would love for someone with expertise in three-js and memory management/performance to give his/her opinion on my website’s performance. I am still learning and it is difficult for me to find out if I have memory leaks going on or something else affecting the performance OR if my three-js scene is just too heavy (in terms of its assets etc.)

This is my website:

Any feedback much appreciated!
Thank you so much.