mlehr
1 - In the Filter Config, you can see a column called 'Use to sort': https://prnt.sc/ql4bk5 where you can decide which field will be used to sort, check that position field on your filter and disable it.
2 - You can use this custom css to change the text for the pagination to white:
.products-toolbar .pagination > li a,
.products-toolbar .pagination > li span {
color: #fff !important;
}