I looked into matrix servers the other day for an unrelated reason and tbh the amount of resources they ask for is way more than you need for a webpage (dendrite asks for 1gb ram minimum for a number of users, and that’s without accounting for postgres)
Matrix is literally there.
Just host your own god damn servers alongside your webpage (assuming it’s not running on Guthub pages)
I looked into matrix servers the other day for an unrelated reason and tbh the amount of resources they ask for is way more than you need for a webpage (dendrite asks for 1gb ram minimum for a number of users, and that’s without accounting for postgres)