why isn’t my xbox letting me sign in and how do i fix it

i can barely find anything online about this problem and everything it’s told me to do i have done and it hasn’t helped. i’ve unplugged everything and plugged it in again, i’ve rebooted the router and my internet is working fine. it’s been like this for about a week now it just randomly signed me out and won’t let me sign in again. i’m rubbish with technology but i think i’ve done everything it’s told me to do online and it hasn’t helped. sometimes if i go offline i can sign in and go back online again and that works for a while (before signing me back out after about 10 minutes) but even then it won’t let me play any games 😭