mc is lagging even though the resources look fine

[ebon timber]

hello so im hosting a small server with few friends but they keep saying the servers kicks them or it dont load them in

https://media.discordapp.net/attachments/1427003825985949906/1430638366516580443/image.png?ex=68fa814e&is=68f92fce&hm=e42efc93468631750ba2f504352363639b49b809f10f98742ef10aaba598382a&=&format=png&quality=lossless&width=1536&height=864

https://cdn.discordapp.com/attachments/1427003825985949906/1430639599528444055/image.png?ex=68fa8274&is=68f930f4&hm=dd8640e1e51b687d19583e7e336b761bc5654734b6b8a2e1e123e1fc1598d2fa&

they are both installed

https://cdn.discordapp.com/attachments/1427003825985949906/1430638971754643659/image.png?ex=68fa81de&is=68f9305e&hm=3e9f0329a76fc750501ff0f2ce6ada496e48933ce8f5c0eb289eb61e794c9077&

apparently when i give her creative mode it loads but if i dont it just times her out

can i have some help with this?

[ebon timber]

now neither this help

[lilac nymph]

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