secure boot and TPM 2.0 - my pc does not have secure boot.

context, i got a new PC a few months back, i cannot play valorant because of the secure boot and TPM 2.0 issue, which i have dealt with previously on an old computer. i was able to fix it then on that pc, however i cannot now on this one.

me and many others have looked through my bios to no avail. there is no secure boot, i think my pc's motherboard or something is too old and doesnt have it. is there ANY way i can fix this issue with valorant to be able to play or am i just not able to play the game anymore?

any insight if this is fixable or salvageable would be appreciated, im very irritated as i spent a lot of money on the game and now i cant play at all anymore T_T